2017 Western & Southern Open
The 2017 Western & Southern Open was a men's and women's tennis tournament played on outdoor hard courts from August 14–20, 2017. It was a Masters 1000 tournament on the 2017 [ATP World Tour] and a WTA Premier 5 tournament on the 2017 [WTA Tour]. The tournament was one of two headline events in the 2017 US Open Series. The 2017 tournament was the 116th men's edition and the 89th women's edition of the Cincinnati Masters. The tournament was held annually at the Lindner Family Tennis Center in Mason, a northern suburb of Cincinnati, in the United States.
Marin Čilić and Karolína Plíšková were the defending champions in men's and women's singles titles. Čilić withdrew due to an adductor injury before the tournament began, while Plíšková lost in the semifinals to Garbiñe Muguruza.
ATP singles main-draw entrants
Seeds
The following are the seeded players. Seedings are based on ATP rankings as of August 7, 2017. Rankings and points before are as of August 14, 2017.| Seed | Rank | Player | Points before | 2016 [Western & Southern Open – Men's singles|Points defending] | 2017 Western & [Southern Open – Men's singles|Points won] | Points after | Status |
| 1 | 2 |  Other entrantsThe following players received wild cards into the main singles draw:The following players received entry from the singles qualifying draw:
Withdrawals;Before the tournament
ATP doubles main-draw entrantsSeeds
Other entrantsThe following pairs received wildcards into the doubles main draw:Withdrawals;During the tournamentWTA singles main-draw entrantsSeeds
Other entrantsThe following players received wild cards into the main singles draw:The following players received entry from the singles qualifying draw:
Withdrawals;Before the tournament
WTA doubles main-draw entrantsSeeds
Other entrantsThe following pair received a wildcard into the doubles main draw:The following pair received entry as alternates: Withdrawals;Before the tournamentChampionsMen's singlesGrigor Dimitrov def. Nick Kyrgios, 6–3, 7–5Women's singlesGarbiñe Muguruza def. Simona Halep, 6–1, 6–0Men's doublesPierre-Hugues Herbert / Nicolas Mahut def. Jamie Murray / Bruno Soares, 7–6, 6–4Women's doublesChan Yung-jan / Martina Hingis def. Hsieh Su-wei / Monica Niculescu, 4–6, 6–4, |