2021 National Bank Open

{{Short description|Canadian tennis tournament}} {{Use mdy dates|date=January 2025}} {{Use Canadian English|date=March 2026}} {{Infobox tennis event|2021|National Bank Open| | date = August 6–15, 2021 | edition = 131st (men) / 119th (women) | main_name = Canadian Open (tennis) | surface = [[Hardcourt|Hard]] / outdoor | location = [[Toronto]], [[Ontario]], Canada (men) [[Montreal]], Canada (women) | category = [[ATP Tour Masters 1000]] (men) [[WTA 1000]] (women) | champms = {{flagicon|RUS}} [[Daniil Medvedev]] | champws = {{flagicon|ITA}} [[Camila Giorgi]] | champmd = {{nowrap|{{flagicon|USA}} [[Rajeev Ram]] / {{flagicon|GBR}} [[Joe Salisbury]]}} | champwd = {{nowrap|{{flagicon|CAN}} [[Gabriela Dabrowski]] / {{flagicon|BRA}} [[Luisa Stefani]]}} | before_year = 2019 | before_name = Rogers Cup }}

The '''2021 [[Canadian Open (tennis)|Canadian Open]]''' (branded as the '''2021 [[National Bank of Canada|National Bank]] Open presented by [[Rogers Communications|Rogers]]''' for sponsorship reasons) were outdoor [[hard court]] [[tennis]] tournaments played from August 6 to August 15, 2021, as part of the 2021 [[US Open Series]]. The men's event took place at the [[Aviva Centre]] in Toronto, and the women's tournament at the [[IGA Stadium]] in Montreal. It was the 131st edition of the men's tournament—a [[ATP Masters 1000|Masters 1000]] tournament on the [[2021 ATP Tour]], and the 119th edition of the women's tournament—a [[WTA 1000]] tournament on the [[2021 WTA Tour]].<ref>{{cite web|title=National Bank Open Overview|url=https://www.atptour.com/en/tournaments/toronto/421/overview|publisher=ATP}}</ref><ref>{{cite web|title=Omnium Banque Nationale Overview|url=https://www.wtatennis.com/tournament/806/montreal|publisher=Women's Tennis Association}}</ref>

They were originally scheduled to be played from August 8 to August 16, 2020, as part of the 2020 tennis season. Due to the [[COVID-19 pandemic]], the 2020 edition of the [[Canadian Open (tennis)|Canadian Open]] was postponed to 2021 by [[Tennis Canada]].

== Impact of the COVID-19 pandemic, postponement to 2021 == {{see also|Impact of the COVID-19 pandemic on sports|COVID-19 pandemic in Ontario|COVID-19 pandemic in Quebec}} The men's and women's tournaments alternate between Toronto and Montreal annually. On April 11, 2020, pursuant to a request by the province of [[Quebec]] (the [[COVID-19 pandemic in Quebec]] was the centre of the first wave of the pandemic in Canada) for all cultural and sporting events to be cancelled through August,<ref>{{Cite web|url=https://www.ctvnews.ca/montreal/article/quebec-calls-for-cancellation-of-all-sports-festivals-and-cultural-events-until-aug-31/|title=Quebec calls for cancellation of all sports, festivals and cultural events until Aug. 31|last=Staff|date=2020-04-10|website=CTV News Montreal|access-date=2020-04-11}}</ref> Tennis Canada announced that the women's half of the Canadian Open, as part of the [[2020 WTA Tour]], would be postponed and held in Montreal in 2021.<ref name=":0" /><ref name=":1" />

The men's half of the event was still tentatively scheduled, but was still at risk of cancellation or postponement if the ATP and WTA extended their suspension of play into August, or if Toronto or the province of Ontario made a similar order that also applies to the period.<ref name=":0">{{Cite web|date=2020-04-11|title=Tennis Canada announces postponement of Rogers Cup, which was scheduled for August|url=https://www.ctvnews.ca/montreal/article/tennis-canada-announces-postponement-of-rogers-cup-which-was-scheduled-for-august/|url-status=live|access-date=2020-04-11|website=CTV News Montreal|publisher=Bell Media|archive-url=https://web.archive.org/web/20200411181714/https://montreal.ctvnews.ca/tennis-canada-announces-postponement-of-rogers-cup-which-was-scheduled-for-august-1.4892124 |archive-date=2020-04-11 }}</ref><ref name=":1">{{Cite web|last=Masters|first=Mark|date=2020-04-11|title=Montreal postponed, Toronto event "in jeopardy" as Tennis Canada faces "severe" economic challenge|url=https://www.tsn.ca/montreal-postponed-toronto-event-in-jeopardy-as-tennis-canada-faces-severe-economic-challenge-1.1465297|url-status=live|access-date=2020-04-12|website=TSN|publisher=Bell Media|archive-url=https://web.archive.org/web/20200412200845/https://www.tsn.ca/montreal-postponed-toronto-event-in-jeopardy-as-tennis-canada-faces-severe-economic-challenge-1.1465297 |archive-date=2020-04-12 }}</ref> Toronto had already cancelled all city-led major events, festivals, conferences, permits and cultural programs until June 30, 2020. Although subject to provincial restrictions on public gatherings, Mayor [[John Tory]] stated that these did not necessarily bar the hosting of sporting events.<ref>{{cite web|title=Coronavirus: City of Toronto cancels events through June 30, including Pride Parade|url=https://globalnews.ca/news/6758350/coronavirus-toronto-cancels-events-pride-parade/|url-status=live|archive-url=https://web.archive.org/web/20200401002824/https://globalnews.ca/news/6758350/coronavirus-toronto-cancels-events-pride-parade/|archive-date=April 1, 2020|access-date=2020-04-03|website=Global News|publisher=Corus Entertainment}}</ref><ref>{{cite web|date=2020-03-31|title=Toronto official: Ban doesn't include pro teams|url=https://www.espn.com/espn/story/_/id/28978500/toronto-pro-sports-teams-not-impacted-new-ban-official-says|url-status=live|archive-url=https://web.archive.org/web/20200403224722/https://www.espn.com/espn/story/_/id/28978500/toronto-pro-sports-teams-not-impacted-new-ban-official-says|archive-date=April 3, 2020|access-date=2020-04-03|website=ESPN.com|publisher=ESPN Internet Ventures}}</ref>

On June 17, 2020, Tennis Canada officially announced that the men's tournament had also been postponed<ref name=":2">{{Cite web|title=Rogers Cup in Toronto postponed until 2021 due to COVID-19 pandemic|url=https://www.sportsnet.ca/tennis/rogers-cup-toronto-postponed-2021-due-covid-19-pandemic/|url-status=live|access-date=2021-03-06|website=Sportsnet|publisher=Rogers Media|archive-url=https://web.archive.org/web/20200617145016/https://www.sportsnet.ca/tennis/rogers-cup-toronto-postponed-2021-due-covid-19-pandemic/ |archive-date=2020-06-17 }}</ref> to 2021, citing logistical and safety issues that would be present for players and staff even if the event were to be held [[Behind closed doors (sport)|behind closed doors]], including a [[Quarantine Act, 2005|federal health order]] requiring 14 days [[Isolation (health care)|self-isolation]] upon arrival for anyone travelling to Canada.<ref name=":3">{{Cite web|date=2020-06-17|title=Toronto loses Rogers Cup men's event for 2020 because of COVID-19|url=https://www.ctvnews.ca/toronto/article/toronto-loses-rogers-cup-mens-event-for-2020-because-of-covid-19/|access-date=2020-07-04|website=CTV News Toronto}}</ref> As they have been postponed, the men's and women's tournaments will still be held in Toronto and Montreal as per the traditional rotation.<ref name=":3" /><ref name=":2" />

On February 1, 2021, [[National Bank of Canada|National Bank]] was promoted to title sponsor of the tournament, replacing [[Rogers Communications]], which now serves as presenting sponsor.<ref>{{Cite news|title=Rogers Cup tennis tournament renamed National Bank Open|agency=Canadian Press|url=https://www.cbc.ca/sports/tennis/rogers-cup-renamed-national-bank-open-1.5897746|access-date=2021-03-06}}</ref>

==Points and prize money==

===Point distribution=== {|class=wikitable style=font-size:90%;text-align:center |- |style="width:130px; background:#dfe2e9;"|'''Event''' |style="width:80px; background:lime;"|{{Tooltip|'''W'''|Win}} |style="width:85px; background:thistle;"|{{Tooltip| F | Final}} |style="width:85px; background:#ff0;"|{{Tooltip| SF | Semifinal}} |style="width:85px; background:#ffebcd;"|{{Tooltip| QF | Quarterfinal}} |style="width:85px; background:#afeeee;"|Round of 16 |style="width:85px; background:#afeeee;"|Round of 32 |style="width:85px; background:#afeeee;"|Round of 64 |width=85|{{Tooltip| Q | Qualifier}} |width=85|{{Tooltip| Q2 | Qualifying round 2}} |width=85|{{Tooltip| Q1 | Qualifying round 1}} |- !style="background:#ededed;"|Men's singles<ref name="ATP points">{{cite web|url=http://www.atpworldtour.com/Rankings/Rankings-FAQ.aspx|access-date=25 February 2013|title=Rankings explained|publisher=atpworldtour.com}}</ref> |rowspan=2|1000 |rowspan=2|600 |rowspan=2|360 |rowspan=2|180 |rowspan=2|90 |45 |10 |25 |16 |0 |- !style="background:#ededed;"|Men's doubles<ref name="ATP points"/> |0 |{{n/a}} |{{n/a}} |{{n/a}} |{{n/a}} |- !style="background:#ededed;"|Women's singles<ref name="WTA points">{{cite web|url=http://www.wtatennis.com/all-about-rankings |access-date=25 February 2012 |title=Rankings explained |publisher=WTA |url-status=dead |archive-url=https://web.archive.org/web/20121214232116/http://www.wtatennis.com/all-about-rankings |archive-date=14 December 2012 }}</ref> |rowspan=2|900 |rowspan=2|585 |rowspan=2|350 |rowspan=2|190 |rowspan=2|105 |60 |1 |30 |20 |1 |- !style="background:#ededed;"|Women's doubles<ref name="WTA points"/> |5 |{{n/a}} |{{n/a}} |{{n/a}} |{{n/a}} |}

===Prize money===

{|class=wikitable style=font-size:90%;text-align:center |width=130 bgcolor=dfe2e9|'''Event''' |width=80 bgcolor=lime|'''W''' |width=85 bgcolor=thistle|F |width=85 bgcolor=ffff00|SF |width=85 bgcolor=ffebcd|QF |width=85 bgcolor=afeeee|Round of 16 |width=85 bgcolor=afeeee|Round of 32 |width=85 bgcolor=afeeee|Round of 64 |width=85|Q2 |width=85|Q1 |- !style=background:#ededed|Men's singles |$370,290 |$211,000 |$121,250 |$74,000 |$45,000 |$26,770 |$15,845 |$8,350 |$4,445 |- !style=background:#ededed|Women's singles |$221,500 |$164,000 |$87,000 |$41,500 |$21,000 |$13,300 |$10,750 |$5,080 |$3,250 |- !style=background:#ededed|Men's doubles* |$68,440 |$47,910 |$32,840 |$22,240 |$15,050 |$10,270 |{{n/a}} |{{n/a}} |{{n/a}} |- !style=background:#ededed|Women's doubles* |$67,000 |$43,990 |$27,500 |$13,800 |$8,700 |$6,500 |{{n/a}} |{{n/a}} |{{n/a}} |} *per team

==Champions==

===Men's singles=== {{main|2021 National Bank Open – Men's singles}} * {{flagicon|RUS}} '''[[Daniil Medvedev]]''' def. {{flagicon|USA}} [[Reilly Opelka]], 6–4, 6–3.

===Women's singles=== {{main|2021 National Bank Open – Women's singles}} * {{flagicon|ITA}} '''[[Camila Giorgi]]''' def. {{flagicon|CZE}} [[Karolína Plíšková]], 6–3, 7–5.

This was Giorgi's third WTA Tour singles title, and first at WTA 1000 level.

===Men's doubles=== {{main|2021 National Bank Open – Men's doubles}} * {{flagicon|USA}} '''[[Rajeev Ram]]''' / {{flagicon|GBR}} '''[[Joe Salisbury]]''' def. {{flagicon|CRO}} [[Nikola Mektić]] / {{flagicon|CRO}} [[Mate Pavić]], 6–3, 4–6, [10–3]

===Women's doubles=== {{main|2021 National Bank Open – Women's doubles}} * {{flagicon|CAN}} '''[[Gabriela Dabrowski]]''' / {{flagicon|BRA}} '''[[Luisa Stefani]]''' def. {{flagicon|CRO}} [[Darija Jurak]] / {{flagicon|SLO}} [[Andreja Klepač]], 6–3, 6–4

==ATP singles main-draw entrants==

===Seeds=== The following are the seeded players. Rankings are as of August 2, 2021. Points before are as of August 9, 2021.

Because the tournament is being held one week later than the last edition in 2019 and as a result of special ranking adjustment rules due to COVID, the Points before column already reflects either a 50% reduction in the player's 2019 points or the substitution of the player's next best result.<ref>{{cite web|url=https://www.atptour.com/en/news/fedex-atp-rankings-adjustments-faq|title= FedEx ATP Rankings COVID-19 Adjustments FAQ|website=ATP|date=3 March 2021|access-date=30 May 2021}}</ref> Accordingly, the Points defending column has been adjusted to show the greater of (a) 50% of the player's 2019 points and (b) the player's 19th best result.

Following the tournament, players will count either their 2021 points or 50% of their 2019 points, whichever is greater.<ref>{{cite web|url= https://www.atptour.com/en/news/fedex-atp-rankings-methodology-returns-to-normal|title= Cincinnati Marks Beginning of 'Return to Normal' for FedEx ATP Rankings Logic|website=ATPtour.com|date=August 4, 2021|access-date=August 9, 2021}}</ref>

In addition, because the tournament is not mandatory in 2021, players may count their next best result instead if that result is better. Accordingly, points after will differ from points before only if the player's 2021 points won exceed points defending.

{|class="wikitable sortable" ! style="width:30px;" |Seed ! style="width:30px;" |Rank ! style="width:260px;"|Player ! style="width:90px;" |Points before ! style="width:110px;"|[[2019 Rogers Cup – Men's singles|Points defending]]† ! style="width:70px;" |Points won ! style="width:90px;" |Points after ! style="width:380px;"|Status |-style="background:#cfc;" | style="text-align:center;" | 1 | style="text-align:center;" | 2 | {{flagicon|RUS}} [[Daniil Medvedev]] | style="text-align:center;" | 9,920 | style="text-align:center;" | 300 | style="text-align:center;" | 1,000 | style="text-align:center;" | '''10,620''' | '''Champion''', defeated {{flagicon|USA}} [[Reilly Opelka]] |- | style="text-align:center;" | <s>2</s> | style="text-align:center;" | <s>3</s> | {{flagicon|ESP}} <s>[[Rafael Nadal]]</s> | style="text-align:center;" | 7,815 | style="text-align:center;" | 500 | style="text-align:center;" | 0 | style="text-align:center;" | '''7,815'''‡ | Withdrew due to left foot injury |- | style="text-align:center;" | 3 | style="text-align:center;" | 4 | {{flagicon|GRE}} [[Stefanos Tsitsipas]] | style="text-align:center;" | 8,115 | style="text-align:center;" | (125) | style="text-align:center;" | 360 | style="text-align:center;" | '''8,350''' | Semifinals lost to {{flagicon|USA}} [[Reilly Opelka]] |- | style="text-align:center;" | 4 | style="text-align:center;" | 7 | {{flagicon|RUS}} [[Andrey Rublev]] | style="text-align:center;" | 6,005 | style="text-align:center;" | (180) | style="text-align:center;" | 90 | style="text-align:center;" | '''6,005'''‡ | Third round lost to {{flagicon|USA}} [[John Isner]] |- | style="text-align:center;" | 5 | style="text-align:center;" | 10 | {{flagicon|CAN}} [[Denis Shapovalov]] | style="text-align:center;" | 3,625 | style="text-align:center;" | (45) | style="text-align:center;" | 10 | style="text-align:center;" | '''3,625'''‡ | Second round lost to {{flagicon|USA}} [[Frances Tiafoe]] [LL] |- | style="text-align:center;" | 6 | style="text-align:center;" | 12 | {{flagicon|NOR}} [[Casper Ruud]] | style="text-align:center;" | 3,205 | style="text-align:center;" | (35) | style="text-align:center;" | 180 | style="text-align:center;" | '''3,350''' | Quarterfinals lost to {{flagicon|GRE}} [[Stefanos Tsitsipas]] [3] |- | style="text-align:center;" | 7 | style="text-align:center;" | 13 | {{flagicon|POL}} [[Hubert Hurkacz]] | style="text-align:center;" | 3,118 | style="text-align:center;" | (45) | style="text-align:center;" | 180 | style="text-align:center;" | '''3,253''' | Quarterfinals lost to {{flagicon|RUS}} [[Daniil Medvedev]] [1] |- | style="text-align:center;" | 8 | style="text-align:center;" | 14 | {{flagicon|ARG}} [[Diego Schwartzman]] | style="text-align:center;" | 2,913 | style="text-align:center;" | 23 | style="text-align:center;" | 90 | style="text-align:center;" | '''2,980''' | Third round lost to {{flagicon|ESP}} [[Roberto Bautista Agut]] [10] |- | style="text-align:center;" | 9 | style="text-align:center;" | 15 | {{flagicon|CAN}} [[Félix Auger-Aliassime]] | style="text-align:center;" | 2,693 | style="text-align:center;" | 45 | style="text-align:center;" | 10 | style="text-align:center;" | '''2,693'''‡ | Second round lost to {{flagicon|SRB}} [[Dušan Lajović]] |- | style="text-align:center;" | 10 | style="text-align:center;" | 16 | {{flagicon|ESP}} [[Roberto Bautista Agut]] | style="text-align:center;" | 2,630 | style="text-align:center;" | 90 | style="text-align:center;" | 180 | style="text-align:center;" | '''2,720''' | Quarterfinals lost to {{flagicon|USA}} [[Reilly Opelka]] |- | style="text-align:center;" | 11 | style="text-align:center;" | 17 | {{flagicon|FRA}} [[Gaël Monfils]] | style="text-align:center;" | 2,423 | style="text-align:center;" | 180 | style="text-align:center;" | 180 | style="text-align:center;" | '''2,423''' | Quarterfinals lost to {{flagicon|USA}} [[John Isner]] |- | style="text-align:center;" | 12 | style="text-align:center;" | 18 | {{flagicon|AUS}} [[Alex de Minaur]] | style="text-align:center;" | 2,600 | style="text-align:center;" | (45) | style="text-align:center;" | 10 | style="text-align:center;" | '''2,600'''‡ | Second round lost to {{flagicon|GEO}} [[Nikoloz Basilashvili]] |- | style="text-align:center;" | 13 | style="text-align:center;" | 19 | {{flagicon|CHI}} [[Cristian Garín]] | style="text-align:center;" | 2,475 | style="text-align:center;" | (10) | style="text-align:center;" | 10 | style="text-align:center;" | '''2,475''' | Second round lost to {{flagicon|USA}} [[John Isner]] |- | style="text-align:center;" | 14 | style="text-align:center;" | 21 | {{flagicon|BUL}} [[Grigor Dimitrov]] | style="text-align:center;" | 2,466 | style="text-align:center;" | (10) | style="text-align:center;" | 10 | style="text-align:center;" | '''2,466''' | Second round lost to {{flagicon|USA}} [[Reilly Opelka]] |- | style="text-align:center;" | 15 | style="text-align:center;" | 23 | {{flagicon|RUS}} [[Aslan Karatsev]] | style="text-align:center;" | 2,287 | style="text-align:center;" | (15) | style="text-align:center;" | 10 | style="text-align:center;" | '''2,287''' | Second round lost to {{flagicon|RUS}} [[Karen Khachanov]] |- | style="text-align:center;" | 16 | style="text-align:center;" | 24 | {{flagicon|ITA}} [[Jannik Sinner]] | style="text-align:center;" | 2,745 | style="text-align:center;" | (40) | style="text-align:center;" | 10 | style="text-align:center;" | '''2,745'''‡ | Second round lost to {{flagicon|AUS}} [[James Duckworth (tennis)|James Duckworth]] [Q] |}

† Due to a change in schedule for the 2021 tournament and COVID ranking adjustment rules, the Points defending column reflects the greater of (a) 50% of the player's 2019 points and (b) the player's 19th best result. Instances of the latter are enclosed in parentheses.

‡ Because the 2021 tournament was non-mandatory, the player substituted his 19th best result instead of the points won in this tournament.

===Other entrants=== The following players received [[wild card (tennis)|wild card]]s into the main singles draw: * {{flagicon|USA}} [[Jenson Brooksby]] * {{flagicon|AUS}} [[Nick Kyrgios]] * {{flagicon|CAN}} [[Vasek Pospisil]]

The following player received entry using a protected ranking into the main singles draw: * {{flagicon|JPN}} [[Kei Nishikori]]

The following player received entry using a special exempt into the main singles draw: * {{flagicon|USA}} [[Mackenzie McDonald]]

The following players received entry from the singles [[qualifying draw (tennis)|qualifying draw]]: * {{flagicon|LTU}} [[Ričardas Berankis]] * {{flagicon|AUS}} [[James Duckworth (tennis)|James Duckworth]] * {{flagicon|JPN}} [[Yoshihito Nishioka]] * {{flagicon|USA}} [[Tommy Paul (tennis)|Tommy Paul]] * {{flagicon|FIN}} [[Emil Ruusuvuori]] * {{flagicon|CAN}} [[Brayden Schnur]]

The following players received entry as lucky losers: * {{flagicon|ESP}} [[Feliciano López]] * {{flagicon|USA}} [[Frances Tiafoe]]

===Withdrawals=== ;Before the tournament * {{flagicon|ITA}} [[Matteo Berrettini]]<ref name="EntryListJuly30"/> → replaced by {{flagicon|GER}} [[Jan-Lennard Struff]] * {{flagicon|ESP}} [[Pablo Carreño Busta]]<ref name="EntryListJuly30"/> → replaced by {{flagicon|FRA}} [[Benoît Paire]] * {{flagicon|CRO}} [[Borna Ćorić]]<ref name="EntryListJuly30">{{cite web|url=https://tennisuptodate.com/atp/2021-national-bank-open-atp-entry-list-with-nadal-medvedev-zverev-and-federer-last-update-30-07-2021|title=2021 National Bank Open ATP Entry List|website=Tennis Up to Date|date=July 30, 2021|access-date=July 30, 2021|archive-date=July 31, 2021|archive-url=https://web.archive.org/web/20210731123134/https://tennisuptodate.com/atp/2021-national-bank-open-atp-entry-list-with-nadal-medvedev-zverev-and-federer-last-update-30-07-2021|url-status=dead}}</ref> → replaced by {{flagicon|AUS}} [[John Millman]] * {{flagicon|SRB}} [[Novak Djokovic]]<ref name="EntryListJuly30"/> → replaced by {{flagicon|SRB}} [[Dušan Lajović]] * {{flagicon|SUI}} [[Roger Federer]]<ref name="EntryListJuly30"/> → replaced by {{flagicon|SRB}} [[Miomir Kecmanović]] * {{flagicon|BEL}} [[David Goffin]]<ref name="EntryListJuly30"/> → replaced by {{flagicon|ESP}} [[Albert Ramos Viñolas]] * {{flagicon|ESP}} [[Rafael Nadal]] → replaced by {{flagicon|ESP}} [[Feliciano López]] * {{flagicon|AUT}} [[Dominic Thiem]]<ref name="EntryListJuly30"/> → replaced by {{flagicon|USA}} [[Taylor Fritz]] * {{flagicon|CAN}} [[Milos Raonic]]<ref name="EntryListJuly30"/> → replaced by {{flagicon|RSA}} [[Lloyd Harris (tennis)|Lloyd Harris]] * {{flagicon|SUI}} [[Stan Wawrinka]]<ref name="EntryListJuly30"/> → replaced by {{flagicon|CRO}} [[Marin Čilić]] * {{flagicon|GER}} [[Alexander Zverev]]<ref name="EntryListJuly30"/> → replaced by {{flagicon|USA}} [[Frances Tiafoe]]

;During the tournament * {{flagicon|JPN}} [[Kei Nishikori]]

==ATP doubles main-draw entrants==

===Seeds=== {|class="sortable wikitable" |- ! width="70"| Country ! width="175"| Player ! width="70"| Country ! width="175"| Player ! Rank1 ! Seed |-bgcolor=#fcc |{{flag|CRO}} |[[Nikola Mektić]] |{{flag|CRO}} |[[Mate Pavić]] |3 |1 |- |{{flag|COL}} |[[Juan Sebastián Cabal]] |{{flag|COL}} |[[Robert Farah (tennis)|Robert Farah]] |15 |2 |-bgcolor=#cfc |{{flagu|USA}} |[[Rajeev Ram]] |{{flag|GBR}} |[[Joe Salisbury]] |19 |3 |- |{{flag|GER}} |[[Kevin Krawietz]] |{{flag|ROU}} |[[Horia Tecău]] |36 |4 |- |{{flag|POL}} |[[Łukasz Kubot]] |{{flag|BRA}} |[[Marcelo Melo]] |36 |5 |- |{{flag|AUS}} |[[John Peers]] |{{flag|SVK}} |[[Filip Polášek]] |37 |6 |- |{{flag|GER}} |[[Tim Pütz]] |{{flag|NZL}} |[[Michael Venus (tennis)|Michael Venus]] |51 |7 |- |{{flag|IND}} |[[Rohan Bopanna]] |{{flag|CRO}} |[[Ivan Dodig]] |51 |8 |} *Rankings are as of August 2, 2021.

===Other entrants=== The following pairs received wildcards into the doubles main draw: * {{flagicon|CAN}} [[Félix Auger-Aliassime]] / {{flagicon|CAN}} [[Alexis Galarneau]] * {{flagicon|BUL}} <s>[[Grigor Dimitrov]] / {{flagicon|CAN}} [[Vasek Pospisil]]</s> * {{flagicon|CAN}} [[Peter Polansky]] / {{flagicon|CAN}} [[Brayden Schnur]]

The following pair received entry as alternates: * {{flagicon|SRB}} [[Miomir Kecmanović]] / {{flagicon|NOR}} [[Casper Ruud]]

===Withdrawals=== ;Before the tournament * {{flagicon|BUL}} [[Grigor Dimitrov]] / {{flagicon|CAN}} [[Vasek Pospisil]] → replaced by {{flagicon|SRB}} [[Miomir Kecmanović]] / {{flagicon|NOR}} [[Casper Ruud]] * {{flagicon|ESP}} [[Marcel Granollers]] / {{flagicon|ARG}} [[Horacio Zeballos]] → replaced by {{flagicon|AUT}} [[Oliver Marach]] / {{flagicon|AUT}} [[Philipp Oswald]] * {{flagicon|NED}} [[Wesley Koolhof]] / {{flagicon|NED}} [[Jean-Julien Rojer]] → replaced by {{flagicon|NED}} [[Wesley Koolhof]] / {{flagicon|USA}} [[Austin Krajicek]] * {{flagicon|SRB}} [[Filip Krajinović]] / {{flagicon|SRB}} [[Dušan Lajović]] → replaced by {{flagicon|RUS}} [[Aslan Karatsev]] / {{flagicon|SRB}} [[Dušan Lajović]] * {{flagicon|GER}} [[Jan-Lennard Struff]] / {{flagicon|GER}} [[Alexander Zverev]] → replaced by {{flagicon|CRO}} [[Marin Čilić]] / {{flagicon|GER}} [[Jan-Lennard Struff]]

==WTA singles main-draw entrants==

===Seeds===

{|class="sortable wikitable" |- ! width="70"| Country ! width="175"| Player ! Rank1 ! Seed |- |{{flag|BLR}} |[[Aryna Sabalenka]] |3 |1 |- |{{flag|CAN}} |[[Bianca Andreescu]] |5 |2 |- |{{flag|UKR}} |[[Elina Svitolina]] |6 |3 |-style="background:#fcc;" |{{flag|CZE}} |[[Karolína Plíšková]] |7 |4 |- |{{flag|ESP}} |[[Garbiñe Muguruza]] |9 |5 |- |{{flag|ROU}} |[[Simona Halep]] |10 |6 |- |{{flag|CZE}} |[[Petra Kvitová]] |13 |7 |- |{{flag|BLR}} |[[Victoria Azarenka]] |15 |8 |- |{{flag|BEL}} |[[Elise Mertens]] |17 |9 |- |{{flag|RUS}} |[[Anastasia Pavlyuchenkova]] |18 |10 |- |{{flag|GRE}} |[[Maria Sakkari]] |19 |11 |- |{{flag|KAZ}} |[[Elena Rybakina]] |20 |12 |- |{{flag|TUN}} |[[Ons Jabeur]] |22 |13 |- |{{flag|CZE}} |[[Karolína Muchová]] |23 |14 |- |{{flagu|USA}} |[[Coco Gauff]] |25 |15 |- |{{flagu|USA}} |[[Madison Keys]] |26 |16 |} * 1 Rankings are as of August 2, 2021

===Other entrants=== The following players received [[wild card (tennis)|wild card]]s into the main singles draw: * {{flagicon|CAN}} [[Leylah Annie Fernandez]] * {{flagicon|ROU}} [[Simona Halep]]<ref>{{cite web|url=https://www.thesuburban.com/sports/simona-halep-confirms-participation-at-national-bank-open/article_0e479ff7-f821-5ba7-9adc-da7725a19654.html|title=Simona Halep confirms participation at National Bank Open|work=[[The Suburban]]|author=[[Tennis Canada]]|date=July 29, 2021|access-date=July 29, 2021}}</ref> * {{flagicon|CAN}} [[Rebecca Marino]] * {{flagicon|USA}} [[Sloane Stephens]] * {{flagicon|CAN}} [[Carol Zhao]]

The following players received entry from the singles [[qualifying draw (tennis)|qualifying draw]]: * {{flagicon|USA}} [[Amanda Anisimova]] * {{flagicon|FRA}} [[Clara Burel]] * {{flagicon|GBR}} [[Harriet Dart]] * {{flagicon|FRA}} [[Océane Dodin]] * {{flagicon|FRA}} [[Caroline Garcia]] * {{flagicon|CZE}} [[Tereza Martincová]] * {{flagicon|RUS}} [[Anastasia Potapova]] * {{flagicon|BEL}} [[Alison Van Uytvanck]]

===Withdrawals=== ;Before the tournament * {{flagicon|RUS}} [[Ekaterina Alexandrova]] → replaced by {{flagicon|CZE}} [[Kateřina Siniaková]] * {{flagicon|AUS}} [[Ashleigh Barty]]<ref name="EntryListJuly31">{{cite web|url=https://tennisuptodate.com/wta/barty-venus-williams-and-kerber-out-of-national-bank-open-montreal|title=Barty, Venus Williams and Kerber Out of the National Bank Open|website=Tennis Up to Date|date=July 31, 2021|access-date=July 31, 2021}}</ref> → replaced by {{flagicon|USA}} [[Danielle Collins]] * {{flagicon|SUI}} [[Belinda Bencic]] → replaced by {{flagicon|SUI}} [[Jil Teichmann]] * {{flagicon|USA}} [[Jennifer Brady]] → replaced by {{flagicon|ITA}} [[Camila Giorgi]] * {{flagicon|USA}} [[Sofia Kenin]]<ref name="EntryListAug3">{{cite web|url=https://tennisuptodate.com/wta/barty-venus-williams-and-kerber-out-of-national-bank-open-montreal|title=Naomi Osaka, Sofia Kenin and Iga Swiatek pull out of National Bank Open in Montreal}}</ref> → replaced by {{flagicon|LAT}} [[Anastasija Sevastova]] * {{flagicon|GER}} [[Angelique Kerber]]<ref name="EntryListJuly31"/> → replaced by {{flagicon|AUS}} [[Ajla Tomljanović]] * {{flagicon|CZE}} [[Barbora Krejčiková]] → replaced by {{flagicon|CZE}} [[Marie Bouzková]] * {{flagicon|JPN}} [[Naomi Osaka]]<ref name="EntryListAug3"/> → replaced by {{flagicon|FRA}} [[Fiona Ferro]] * {{flagicon|POL}} [[Iga Świątek]]<ref name="EntryListAug3"/> → replaced by {{flagicon|RUS}} [[Liudmila Samsonova]] * {{flagicon|CZE}} [[Markéta Vondroušová]] → replaced by {{flagicon|CHN}} [[Zhang Shuai]]

;During the tournament * {{flagicon|GBR}} [[Johanna Konta]] (left knee injury)

===Retirements=== * {{flagicon|CZE}} [[Marie Bouzková]] (dizziness) * {{flagicon|CZE}} [[Tereza Martincová]] (abdominal pain) * {{flagicon|RUS}} [[Anastasia Potapova]] (left ankle injury) * {{flagicon|CHN}} [[Zhang Shuai]] (left leg injury)

==WTA doubles main-draw entrants==

===Seeds=== {|class="sortable wikitable" |- ! width="70"| Country ! width="175"| Player ! width="70"| Country ! width="175"| Player ! Rank1 ! Seed |- |{{flag|BEL}} |[[Elise Mertens]] |{{flag|BLR}} |[[Aryna Sabalenka]] |8 |1 |- |{{flag|JPN}} |[[Shuko Aoyama]] |{{flag|JPN}} |[[Ena Shibahara]] |18 |2 |- |{{flagu|USA}} |[[Nicole Melichar]] |{{flag|NED}} |[[Demi Schuurs]] |23 |3 |- |{{flag|CHI}} |[[Alexa Guarachi]] |{{flagu|USA}} |[[Desirae Krawczyk]] |33 |4 |-bgcolor=#cfc |{{flag|CAN}} |[[Gabriela Dabrowski]] |{{flag|BRA}} |[[Luisa Stefani]] |37 |5 |-bgcolor=#fcc |{{flag|CRO}} |[[Darija Jurak]] |{{flag|SLO}} |[[Andreja Klepač]] |48 |6 |- |{{flag|AUS}} |[[Ellen Perez]] |{{flag|CZE}} |[[Květa Peschke]] |81 |7 |- |{{flagu|USA}} |[[Coco Gauff]] |{{flagu|USA}} |[[Jessica Pegula]] |91 |8 |} *Rankings are as of August 2, 2021.

===Other entrants=== The following pairs received wildcards into the doubles main draw: * {{flagicon|CAN}} [[Mélodie Collard]] / {{flagicon|CAN}} [[Carol Zhao]] * {{flagicon|CAN}} [[Leylah Annie Fernandez]] / {{flagicon|CAN}} [[Rebecca Marino]]

The following pairs received entry as alternates: * {{flagicon|GBR}} [[Harriet Dart]] / {{flagicon|EST}} [[Anett Kontaveit]] * {{flagicon|FRA}} [[Océane Dodin]] / {{flagicon|RUS}} [[Kamilla Rakhimova]]

===Withdrawals=== ;Before the tournament * {{flagicon|CZE}} [[Marie Bouzková]] / {{flagicon|CZE}} [[Lucie Hradecká]] → replaced by {{flagicon|FRA}} [[Elixane Lechemia]] / {{flagicon|USA}} [[Ingrid Neel]] * {{flagicon|TPE}} [[Chan Hao-ching]] / {{flagicon|TPE}} [[Latisha Chan]] → replaced by {{flagicon|GER}} [[Vivian Heisen]] / {{flagicon|POL}} [[Alicja Rosolska]] * {{flagicon|USA}} [[Kaitlyn Christian]] / {{flagicon|JPN}} [[Nao Hibino]] → replaced by {{flagicon|USA}} [[Kaitlyn Christian]] / {{flagicon|USA}} [[Christina McHale]] * {{flagicon|KAZ}} [[Anna Danilina]] / {{flagicon|BLR}} [[Lidziya Marozava]] → replaced by {{flagicon|NOR}} [[Ulrikke Eikeri]] / {{flagicon|USA}} [[Catherine Harrison (tennis)|Catherine Harrison]] * {{flagicon|JPN}} [[Eri Hozumi]] / {{flagicon|CHN}} [[Zhang Shuai]] → replaced by {{flagicon|FRA}} [[Océane Dodin]] / {{flagicon|RUS}} [[Kamilla Rakhimova]] * {{flagicon|JPN}} [[Miyu Kato (tennis)|Miyu Kato]] / {{flagicon|USA}} [[Sabrina Santamaria]] → replaced by {{flagicon|USA}} [[Emina Bektas]] / {{flagicon|GBR}} [[Tara Moore]] * {{flagicon|CZE}} [[Barbora Krejčíková]] / {{flagicon|CZE}} [[Kateřina Siniaková]] → replaced by {{flagicon|INA}} [[Beatrice Gumulya]] / {{flagicon|GBR}} [[Emily Webley-Smith]] * {{flagicon|USA}} [[Sofia Kenin]] / {{flagicon|LAT}} [[Jeļena Ostapenko]] → replaced by {{flagicon|LAT}} [[Jeļena Ostapenko]] / {{flagicon|UKR}} [[Dayana Yastremska]] * {{flagicon|RUS}} [[Anastasia Potapova]] / {{flagicon|RUS}} [[Vera Zvonareva]] → replaced by {{flagicon|GBR}} [[Harriet Dart]] / {{flagicon|EST}} [[Anett Kontaveit]]

== References == {{reflist}}

==External links== *{{Official website|https://nationalbankopen.com/}}

{{DEFAULTSORT:Canadian Open, 2021}} [[Category:2021 in Canadian tennis]] [[Category:Canadian Open (tennis)|2021]] [[Category:August 2021 sports events in Canada]] [[Category:2021 National Bank Open| ]] [[Category:2021 in sports in Ontario]]