2021 Western & Southern Open

2021 Western & Southern Open
2021 Western & Southern Open
Date	August 15–22
Edition	120th (men) / 93rd (women)
Category	ATP Tour Masters 1000 (men); WTA 1000 (women)
Surface	Hard
Location	Mason, Ohio, United States
Venue	Lindner Family Tennis Center
Champions
Men's singles
	Alexander Zverev
Women's singles
	Ashleigh Barty
Men's doubles
	Marcel Granollers / Horacio Zeballos
Women's doubles
	Samantha Stosur / Zhang Shuai

The 2021 Western & Southern Open was a men's and women's tennis tournament played on outdoor hard courts from August 15–22, 2021, as part of the US Open Series. It was a Masters 1000 tournament on the 2021 ATP Tour and a WTA 1000 tournament on the 2021 WTA Tour.^[1]^[2]

The 2021 tournament was the 120th men's edition and the 93rd women's edition of the Cincinnati Open and took place at the Lindner Family Tennis Center in Mason, Ohio, a northern suburb of Cincinnati, in the United States, making its return to Ohio for the first time since the 2019 tournament after being held in New York City for 2020 due to the COVID-19 pandemic in the United States. It operated at full spectator capacity as participants were required to have tested negative for COVID-19 or be fully vaccinated.^[3]

Champions

Men's singles

Alexander Zverev def. Andrey Rublev, 6–2, 6–3

Women's singles

Ashleigh Barty def. Jil Teichmann, 6–3, 6–1

This was Barty's 13th WTA singles title, and fifth of the year.

Men's doubles

Marcel Granollers / Horacio Zeballos def. Steve Johnson / Austin Krajicek, 7–6^(7–5), 7–6^(7–5)

Women's doubles

Samantha Stosur / Zhang Shuai def. Gabriela Dabrowski / Luisa Stefani, 7–5, 6–3

ATP singles main-draw entrants

Seeds

The following were the seeded players. Seedings were based on ATP rankings as of August 9, 2021. Rank and points before were as of August 16, 2021.

For the first time since the ATP Tour resumed from its pandemic suspension in August 2020, ATP rankings points were added and dropped per traditional methodology beginning 23 August 2021 (the rankings after the 2021 Western & Southern Open in Cincinnati). A player's current Western & Southern Open ATP ranking points (the greater from 2019 and 2020) dropped 23 August 2021 and were replaced with points earned by the player at this year's Western & Southern Open. Those new points would stay on a player's breakdown for 52 weeks, dropping 22 August 2022. Players who had Western & Southern Open points in their breakdown and did not compete in this year's event also had their existing Cincinnati ranking points drop on 23 August 2021.^[4]

Seed	Rank	Player	Points before	Points defending from 2019 or 2020	Points won	Points after	Status
1	2	Daniil Medvedev	10,620	1,000	360	9,980	Semifinals lost to Andrey Rublev [4]
2	3	Stefanos Tsitsipas	8,350	360	360	8,350	Semifinals lost to Alexander Zverev [3]
3	5	Alexander Zverev	7,250	10	1000	8,240	Champion, defeated Andrey Rublev [4]
4	7	Andrey Rublev	6,005	205	600	6,400	Runner-up, lost to Alexander Zverev [3]
5	8	Matteo Berrettini	5,533	90	90	5,533	Third round lost to Félix Auger-Aliassime [12]
6	10	Denis Shapovalov	3,625	45+90^†	10+45	3,580^{^}	Second round lost to Benoît Paire
7	12	Pablo Carreño Busta	3,260	115	180	3,325	Quarterfinals lost to Daniil Medvedev [1]
8	11	Casper Ruud	3,310	35	180	3,455	Quarterfinals lost to Alexander Zverev [3]
9	13	Hubert Hurkacz	3,253	10+250^†	90+45	3,128	Third round lost to Pablo Carreño Busta [7]
10	14	Diego Schwartzman	2,980	90	90	2,980	Third round lost to Casper Ruud [8]
11	15	Jannik Sinner	2,745	(40)^‡	45	2,750	Second round lost to John Isner
12	17	Félix Auger-Aliassime	2,693	45	180	2,828	Quarterfinals lost to Stefanos Tsitsipas [2]
13	16	Roberto Bautista Agut	2,720	360	10	2,405^{^}	First round lost to Grigor Dimitrov
14	18	Alex de Minaur	2,600	90	45	2,555	Second round lost to Gaël Monfils
15	19	David Goffin	2,513	600	10	1,933^{^}	First round lost to Guido Pella [PR]
16	20	Cristian Garín	2,475	10	10	2,510^{^}	First round lost to Tommy Paul [Q]

† The player is also defending points from the 2019 Winston-Salem Open, which was played during this calendar week in 2019.

‡ The player did not qualify for the tournament in 2019 or 2020. Accordingly, points for his 19th best result are deducted instead.

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

Other entrants

The following players received wild cards into the main singles draw:

The following player received entry using a protected ranking into the main singles draw:

Guido Pella

The following players received entry from the singles qualifying draw:

The following player received entry as a lucky loser:

Dominik Koepfer

Withdrawals

Before the tournament

Borna Ćorić → replaced by Sebastian Korda
Novak Djokovic → replaced by Jan-Lennard Struff
Roger Federer^[6] → replaced by Federico Delbonis
Adrian Mannarino → replaced by Miomir Kecmanović
John Millman → replaced by Dominik Koepfer
Rafael Nadal → replaced by Guido Pella
Kei Nishikori → replaced by Laslo Đere
Milos Raonic → replaced by Benoît Paire
Dominic Thiem^[7] → replaced by Dominik Koepfer
Stan Wawrinka^[7] → replaced by Dušan Lajović