The 2017 Citi Open was a tennis tournament played on outdoor hard courts. It was the 49th edition (for the men) and the 7th edition (for the women) of the Washington Open. The event is part of the ATP World Tour 500 series of the 2017 ATP World Tour, and of the WTA International tournaments of the 2017 WTA Tour. It took place at the William H.G. FitzGerald Tennis Center in Washington, D.C., United States, from July 31 to August 6, 2017.
| 2017 Citi Open | |
|---|---|
| Date | July 31 – August 6 |
| Edition | 49th (men) / 7th (women) |
| Category | ATP World Tour 500 (men) WTA International (women) |
| Surface | Hard (outdoor) SportMaster Sport Surfaces |
| Location | Washington, D.C., United States |
| Champions | |
| Men's singles | |
 Alexander Zverev[1] | |
| Women's singles | |
 Ekaterina Makarova | |
| Men's doubles | |
 Henri Kontinen /  John Peers[2] | |
| Women's doubles | |
 Shuko Aoyama /  Renata Voráčová | |
Points and prize money
Point distribution
| Event | W | F | SF | QF | Round of 16 | Round of 32 | Round of 64 | Q | Q2 | Q1 |
| Men's singles | 500 | 300 | 180 | 90 | 45 | 20 | 0 | 10 | 4 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|
| Men's doubles | 0 | — | — | 45 | 25 | |||||
| Women's singles | 280 | 180 | 110 | 60 | 30 | 1 | — | 18 | 12 | 1 |
| Women's doubles | 1 | — | — | — | — | — |
Prize money
| Event | W | F | SF | QF | Round of 16 | Round of 32 | Round of 641 | Q2 | Q1 |
| Men's singles | $355,460 | $174,265 | $87,685 | $44,595 | $23,160 | $12,215 | $6,600 | $1,355 | $690 |
| Men's doubles * | $107,020 | $52,400 | $26,280 | $13,490 | $6,970 | — | — | — | — |
| Women's singles | $43,000 | $21,400 | $11,500 | $6,200 | $3,420 | $2,220 | — | $1,285 | $750 |
| Women's doubles * | $12,300 | $6,400 | $3,435 | $1,820 | $960 | — | — | — | — |
1 Qualifiers prize money is also the Round of 64 prize money
* per team
ATP singles main-draw entrants
Seeds
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 AUT | Dominic Thiem | 7 | 1 |
| JPN | Kei Nishikori | 8 | 2 |
 CAN | Milos Raonic | 9 | 3 |
 BUL | Grigor Dimitrov | 10 | 4 |
| GER | Alexander Zverev | 11 | 5 |
 FRA | Gaël Monfils | 16 | 6 |
| FRA | Lucas Pouille | 17 | 7 |
 USA | Jack Sock | 19 | 8 |
| USA | |||
| AUS | Nick Kyrgios | 21 | 10 |
 LUX | Gilles Müller | 22 | 11 |
| GER | Mischa Zverev | 25 | 12 |
 ARG | Juan Martín del Potro | 30 | 13 |
| USA | Steve Johnson | 34 | 14 |
 RSA | Kevin Anderson | 35 | 15 |
| USA | Ryan Harrison | 42 | 16 |
- 1 Rankings are as of July 24, 2017
Other entrants
The following players received wild cards into the main singles draw:
The following player received entry using a protected ranking:
The following players received entry from the singles qualifying draw:
The following player received entry as a lucky loser:
Withdrawals
- Before the tournament
Dan Evans →replaced by 
Ruben Bemelmans
John Isner →replaced by 
Marc Polmans
Illya Marchenko →replaced by Reilly Opelka- Bernard Tomic →replaced by Stefan Kozlov
ATP doubles main-draw entrants
Seeds
| Country | Player | Country | Player | Rank1 | Seed |
|---|---|---|---|---|---|
| FIN | Henri Kontinen | AUS | John Peers | 5 | 1 |
 POL | Łukasz Kubot |  BRA | Marcelo Melo | 5 | 3 |
 GBR | Jamie Murray | BRA | Bruno Soares | 11 | 2 |
| USA | Bob Bryan | USA | Mike Bryan | 16 | 4 |
- 1 Rankings are as of July 24, 2017
Other entrants
The following pairs received wildcards into the doubles main draw:
The following pair received entry from the doubles qualifying draw:
WTA singles main-draw entrants
Seeds
| Country | Player | Rank 1 | Seed |
|---|---|---|---|
 ROU | Simona Halep | 2 | 1 |
| FRA | Kristina Mladenovic | 13 | 2 |
| USA | Lauren Davis | 35 | 3 |
| GER | Julia Görges | 39 | 4 |
| FRA | Océane Dodin | 54 | 5 |
| ROU | Monica Niculescu | 57 | 6 |
| RUS | Ekaterina Makarova | 59 | 7 |
| USA | Christina McHale | 60 | 8 |
- 1 Rankings are as of July 24, 2017
Other entrants
The following players received wild cards into the main singles draw:
The following players received entry from the qualifying draw:
Withdrawals
- Before the tournament
Daria Kasatkina →replaced by 
Patricia Maria Țig
Yulia Putintseva →replaced by 
Françoise Abanda
Francesca Schiavone (entered Stanford tournament) →replaced by 
Aryna Sabalenka- Yaroslava Shvedova →replaced by
Mariana Duque Mariño - Samantha Stosur →replaced by
Jana Čepelová
WTA doubles main-draw entrants
Seeds
| Country | Player | Country | Player | Rank1 | Seed |
|---|---|---|---|---|---|
 IND | Sania Mirza | ROU | Monica Niculescu | 23 | 1 |
| JPN | Shuko Aoyama | CZE | Renata Voráčová | 81 | 2 |
 COL | Mariana Duque Mariño | ARG | María Irigoyen | 198 | 3 |
 GRE | Valentini Grammatikopoulou | JPN | Nao Hibino | 218 | 4 |
- 1 Rankings are as of July 24, 2017
Other entrants
The following pair received a wildcard into the doubles main draw:
Finals
Men's singles
Alexander Zverev defeated 
Kevin Anderson 6–4, 6–4.
Women's singles
- Ekaterina Makarova defeated Julia Görges 3–6, 7–6(7–2), 6–0.
Men's doubles
Henri Kontinen / John Peers defeated 
Łukasz Kubot / 
Marcelo Melo 7–6(7–5), 6–4
Women's doubles
Shuko Aoyama / 
Renata Voráčová defeated Eugenie Bouchard / Sloane Stephens, 6–3, 6–2