Washington Open 2015
Kei Nishikori won the title, beating John Isner 4–6 6–4 6–4 in the final.
Main draw 48 players
- 1🇬🇧Andy MurrayRound of 32 · Lost to Teymuraz Gabashvili
- 2🇯🇵Kei NishikoriFinal · Champion
- 3🇭🇷Marin Cilic#97Semifinals · Lost to Kei Nishikori
- 4🇫🇷Richard GasquetRound of 16 · Lost to Jack Sock
- 5🇿🇦Kevin AndersonRound of 32 · Lost to Alexander Zverev
- 6🇧🇬Grigor Dimitrov#135Round of 16 · Lost to Steve Johnson
- 7🇪🇸Feliciano LopezRound of 16 · Lost to Sam Groth
- 8🇺🇸John IsnerFinal · Lost to Kei Nishikori
- 9🇷🇸Viktor TroickiRound of 32 · Lost to Sam Groth
- 10🇭🇷Ivo KarlovicRound of 32 · Lost to Alexandr Dolgopolov
- 11🇦🇺Bernard Tomic#176Round of 32 · Lost to Steve Johnson
- 12🇨🇦Vasek PospisilRound of 16 · Lost to John Isner
- 13🇺🇸Sam QuerreyRound of 16 · Lost to Marin Cilic
- 14🇺🇾Pablo CuevasRound of 32 · Lost to Ricardas Berankis
- 15🇺🇸Jack SockQuarterfinals · Lost to Steve Johnson
- 16🇦🇷Leonardo MayerRound of 16 · Lost to Kei Nishikori
- 🇺🇸Steve Johnson#426Semifinals · Lost to John Isner
- 🇩🇪Alexander Zverev#1Quarterfinals · Lost to Marin Cilic
- 🇱🇹Ricardas BerankisQuarterfinals · Lost to John Isner
- 🇦🇺Sam GrothQuarterfinals · Lost to Kei Nishikori
- 🇺🇦Alexandr DolgopolovRound of 16 · Lost to Alexander Zverev
- 🇷🇺Teymuraz GabashviliRound of 16 · Lost to Ricardas Berankis
- 🇸🇮Blaz RolaRound of 32 · Lost to Leonardo Mayer
- 🇺🇸Donald YoungRound of 32 · Lost to Vasek Pospisil
- 🇱🇺Gilles MullerRound of 32 · Lost to Richard Gasquet
- 🇯🇵Go SoedaRound of 32 · Lost to Sam Querrey
- Q🇦🇷Guido PellaRound of 32 · Lost to Grigor Dimitrov
- 🇰🇷Hyeon ChungRound of 32 · Lost to Marin Cilic
- 🇦🇺James Duckworth#76Round of 32 · Lost to Kei Nishikori
- WC🇦🇺Lleyton HewittRound of 32 · Lost to Feliciano Lopez
- 🇧🇪Ruben BemelmansRound of 32 · Lost to Jack Sock
- DOMVictor EstrellaRound of 32 · Lost to John Isner
- 🇩🇪Benjamin BeckerRound of 64 · Lost to Teymuraz Gabashvili
- QBARDarian KingRound of 64 · Lost to Go Soeda
- WC🇺🇸Denis KudlaRound of 64 · Lost to Blaz Rola
- 🇮🇱Dudi SelaRound of 64 · Lost to Hyeon Chung
- LL🇭🇷Ivan DodigRound of 64 · Lost to Guido Pella
- Q🇦🇺John Patrick SmithRound of 64 · Lost to Lleyton Hewitt
- 🇸🇰Lukas LackoRound of 64 · Lost to Steve Johnson
- 🇹🇳Malek JaziriRound of 64 · Lost to Gilles Muller
- Q🇦🇺Marinko MatosevicRound of 64 · Lost to Ruben Bemelmans
- WC🇨🇱Nicolas JarryRound of 64 · Lost to Victor Estrella
- Q🇺🇸Ryan HarrisonRound of 64 · Lost to James Duckworth
- 🇧🇷Thomaz BellucciRound of 64 · Lost to Sam Groth
- 🇺🇸Tim SmyczekRound of 64 · Lost to Alexandr Dolgopolov
- WC🇩🇪Tommy HaasRound of 64 · Lost to Donald Young
- 🇹🇼Yen Hsun LuRound of 64 · Lost to Ricardas Berankis
- Q🇯🇵Yoshihito NishiokaRound of 64 · Lost to Alexander Zverev