2015 Western & Southern Open

The 2015 Western & Southern Open was a men's and women's tennis tournament played on outdoor hard courts August 15–23, 2015. It was part of the ATP World Tour Masters 1000 of the 2015 ATP World Tour and of the WTA Premier 5 tournaments of the 2015 WTA Tour, as well as a 2015 US Open Series event. The 2015 tournament was the men's 114th edition and the women's 87th edition of the Cincinnati Masters. The tournament is held annually at the Lindner Family Tennis Center in Mason, Ohio (a northern suburb of Cincinnati), United States.

Roger Federer and Serena Williams were the defending champions and both successfully defended their titles.

Seeds

 * Rankings are as of August 10, 2015

Other entrants
The following players received wild cards into the main singles draw:
 * 🇺🇸 Jared Donaldson
 * 🇺🇸 Mardy Fish
 * 🇺🇸 Bjorn Fratangelo
 * 🇺🇸 Rajeev Ram

The following players received entry from the singles qualifying draw:
 * 🇺🇦 Alexandr Dolgopolov
 * 🇦🇺 Thanasi Kokkinakis
 * 🇺🇸 Denis Kudla
 * Lu Yen-hsun
 * 🇫🇷 Nicolas Mahut
 * 🇨🇦 Vasek Pospisil
 * 🇩🇪 Alexander Zverev

The following player received entry as a lucky loser:
 * 🇫🇷 Benoît Paire

Withdrawals

 * Before the tournament
 * 🇪🇸 David Ferrer → replaced by João Sousa
 * 🇪🇸 Guillermo García López → replaced by 🇱🇺 Gilles Müller
 * 🇩🇪 Tommy Haas → replaced by 🇵🇱 Jerzy Janowicz
 * 🇦🇷 Juan Mónaco → replaced by 🇨🇿 Jiří Veselý
 * 🇯🇵 Kei Nishikori → replaced by 🇫🇷 Benoît Paire

Seeds

 * Rankings are as of August 10, 2015

Other entrants
The following pairs received wildcards into the doubles main draw:
 * 🇺🇸 Eric Butorac / 🇺🇸 Scott Lipsky
 * 🇺🇸 Steve Johnson / 🇺🇸 Sam Querrey

Seeds

 * Rankings are as of August 10, 2015

Other entrants
The following players received wild cards into the main singles draw:
 * 🇸🇰 Daniela Hantuchová
 * 🇺🇸 Alison Riske
 * 🇷🇺 Maria Sharapova
 * 🇺🇸 CoCo Vandeweghe

The following player received entry using a protected ranking into the main singles draw:
 * 🇸🇰 Dominika Cibulková

The following players received entry from the singles qualifying draw:
 * 🇭🇺 Tímea Babos
 * 🇩🇪 Mona Barthel
 * 🇺🇦 Kateryna Bondarenko
 * 🇺🇸 Lauren Davis
 * 🇦🇺 Casey Dellacqua
 * 🇩🇪 Julia Görges
 * 🇨🇿 Lucie Hradecká
 * Ana Konjuh
 * 🇺🇸 Christina McHale
 * 🇰🇿 Yulia Putintseva
 * 🇸🇰 Anna Karolína Schmiedlová
 * 🇰🇿 Yaroslava Shvedova

The following player received entry as a lucky loser:
 * Mirjana Lučić-Baroni

Withdrawals

 * Before the tournament
 * 🇷🇺 Svetlana Kuznetsova (left lower leg injury) → replaced by 🇧🇬 Tsvetana Pironkova
 * 🇷🇺 Ekaterina Makarova (right lower leg injury) → replaced by 🇺🇸 Varvara Lepchenko
 * 🇷🇺 Maria Sharapova (right upper leg injury) → replaced by Mirjana Lučić-Baroni


 * During the tournament
 * 🇺🇸 Venus Williams (viral illness)

Retirements

 * 🇧🇾 Victoria Azarenka (left thigh injury)
 * Belinda Bencic (right wrist injury)

Seeds

 * Rankings are as of August 10, 2015

Other entrants
The following pairs received wildcards into the doubles main draw:
 * 🇺🇸 Madison Brengle / 🇺🇸 Alexa Glatch
 * 🇺🇸 Madison Keys / 🇺🇸 Lisa Raymond
 * 🇺🇸 Christina McHale / 🇺🇸 CoCo Vandeweghe

Men's singles

 * Roger Federer defeated 🇷🇸 Novak Djokovic, 7–6(7–1), 6–3

Women's singles

 * 🇺🇸 Serena Williams defeated 🇷🇴 Simona Halep 6–3, 7–6(7–5)

Men's doubles

 * 🇨🇦 Daniel Nestor / 🇫🇷 Édouard Roger-Vasselin defeated 🇵🇱 Marcin Matkowski / 🇷🇸 Nenad Zimonjić, 6–2, 6–2

Women's doubles

 * Chan Hao-ching / Chan Yung-jan defeated 🇦🇺 Casey Dellacqua / 🇰🇿 Yaroslava Shvedova, 7–5, 6–4