2015 Citi Open

The 2015 Citi Open was a tennis tournament played on outdoor hard courts. It was the 47th edition (for the men) and the 5th edition (for the women) of the Washington Open. The event was part of the ATP World Tour 500 series of the 2015 ATP World Tour, and of the WTA International tournaments of the 2015 WTA Tour. It took place at the William H.G. FitzGerald Tennis Center in Washington, D.C., United States, from August 3 to August 9, 2015.

Prize money
1 Qualifiers prize money is also the Round of 64 prize money
 * per team

Seeds

 * 1 Rankings are as of July 27, 2015

Other entrants
The following players received wild cards into the main singles draw:
 * 🇩🇪 Tommy Haas
 * 🇦🇺 Lleyton Hewitt
 * Nicolás Jarry
 * 🇺🇸 Denis Kudla

The following players received entry from the singles qualifying draw:
 * 🇺🇸 Ryan Harrison
 * Darian King
 * 🇦🇺 Marinko Matosevic
 * 🇯🇵 Yoshihito Nishioka
 * 🇦🇷 Guido Pella
 * 🇦🇺 John-Patrick Smith

The following player received entry as lucky loser:
 * Ivan Dodig

Withdrawals

 * Before the tournament
 * 🇨🇾 Marcos Baghdatis → replaced by Ivan Dodig
 * 🇦🇺 Thanasi Kokkinakis → replaced by 🇯🇵 Go Soeda
 * 🇫🇷 Adrian Mannarino → replaced by 🇸🇰 Lukáš Lacko
 * 🇷🇸 Janko Tipsarević → replaced by 🇱🇹 Ričardas Berankis

Seeds

 * 1 Rankings are as of July 27, 2015

Other entrants
The following pairs received wildcards into the doubles main draw: The following pair received entry from the doubles qualifying draw: The following pair received entry as lucky loser:
 * 🇦🇺 Sam Groth / 🇦🇺 Lleyton Hewitt
 * 🇺🇸 Steve Johnson / 🇺🇸 Sam Querrey
 * 🇺🇸 Austin Krajicek / 🇺🇸 Nicholas Monroe
 * Treat Huey / 🇺🇸 Scott Lipsky

Withdrawals

 * Before the tournament
 * Pablo Cuevas (back injury)

Seeds

 * 1 Rankings are as of July 27, 2015

Other entrants
The following players received wild cards into the main singles draw:
 * 🇺🇸 Louisa Chirico
 * 🇺🇸 Taylor Townsend
 * 🇺🇸 CoCo Vandeweghe

The following players received entry from the singles qualifying draw:
 * 🇬🇧 Naomi Broady
 * 🇮🇱 Julia Glushko
 * 🇺🇸 Sanaz Marand
 * 🇧🇪 An-Sophie Mestach

Withdrawals

 * Before the tournament
 * 🇧🇾 Victoria Azarenka → replaced by Polona Hercog
 * 🇨🇦 Eugenie Bouchard → replaced by 🇺🇸 Lauren Davis
 * 🇮🇹 Sara Errani → replaced by 🇺🇸 Irina Falconi
 * 🇸🇰 Daniela Hantuchová → replaced by 🇪🇸 Lara Arruabarrena

Seeds

 * 1 Rankings are as of July 27, 2015

Other entrants
The following pair received a wildcard into the doubles main draw:
 * 🇺🇸 Louisa Chirico / 🇫🇷 Alizé Lim

Men's singles

 * 🇯🇵 Kei Nishikori def. 🇺🇸 John Isner, 4–6, 6–4, 6–4

Women's singles

 * 🇺🇸 Sloane Stephens def. 🇷🇺 Anastasia Pavlyuchenkova, 6–1, 6–2

Men's doubles

 * 🇺🇸 Bob Bryan / 🇺🇸 Mike Bryan def. Ivan Dodig / 🇧🇷 Marcelo Melo, 6–4, 6–2

Women's doubles

 * Belinda Bencic / 🇫🇷 Kristina Mladenovic def. 🇪🇸 Lara Arruabarrena / Andreja Klepač, 7–5, 7–6(9–7)