Japan Open 2017
David Goffin won the title, beating Adrian Mannarino 6–3 7–5 in the final.
Main draw 32 players
- 1🇭🇷Marin Cilic#97Semifinals · Lost to Adrian Mannarino
- 2🇦🇹Dominic ThiemRound of 32 · Lost to Steve Johnson
- 3🇨🇦Milos RaonicRound of 16 · Lost to Yuichi Sugita
- 4🇧🇪David GoffinFinal · Champion
- 5🇿🇦Kevin AndersonRound of 16 · Lost to Ryan Harrison
- 6🇺🇸Sam QuerreyRound of 32 · Lost to Richard Gasquet
- 7🇪🇸Albert RamosRound of 32 · Lost to Jiri Vesely
- 8🇦🇷Diego SchwartzmanSemifinals · Lost to David Goffin
- 🇫🇷Adrian Mannarino#61Final · Lost to David Goffin
- 🇫🇷Richard GasquetQuarterfinals · Lost to David Goffin
- 🇺🇸Ryan HarrisonQuarterfinals · Lost to Marin Cilic
- 🇺🇸Steve Johnson#426Quarterfinals · Lost to Diego Schwartzman
- 🇯🇵Yuichi SugitaQuarterfinals · Lost to Adrian Mannarino
- SE🇺🇦Alexandr DolgopolovRound of 16 · Lost to Steve Johnson
- 🇦🇺Bernard Tomic#176Round of 16 · Lost to Diego Schwartzman
- 🇨🇿Jiri VeselyRound of 16 · Lost to Adrian Mannarino
- Q🇦🇺Matthew EbdenRound of 16 · Lost to David Goffin
- WC🇯🇵Yasutaka UchiyamaRound of 16 · Lost to Marin Cilic
- 🇹🇼Yen Hsun LuRound of 16 · Lost to Richard Gasquet
- 🇫🇷Benoit PaireRound of 32 · Lost to Yuichi Sugita
- 🇷🇺Daniil Medvedev#5Round of 32 · Lost to Alexandr Dolgopolov
- 🇺🇸Donald YoungRound of 32 · Lost to Diego Schwartzman
- 🇪🇸Feliciano LopezRound of 32 · Lost to David Goffin
- Q🇭🇷Franko SkugorRound of 32 · Lost to Yasutaka Uchiyama
- 🇫🇷Gilles SimonRound of 32 · Lost to Kevin Anderson
- WC🇯🇵Go SoedaRound of 32 · Lost to Adrian Mannarino
- 🇭🇷Ivo KarlovicRound of 32 · Lost to Matthew Ebden
- 🇵🇹Joao SousaRound of 32 · Lost to Bernard Tomic
- Q🇬🇷Stefanos Tsitsipas#36Round of 32 · Lost to Marin Cilic
- WC🇯🇵Taro Daniel#172Round of 32 · Lost to Yen Hsun Lu
- 🇷🇸Viktor TroickiRound of 32 · Lost to Milos Raonic
- Q🇯🇵Yusuke TakahashiRound of 32 · Lost to Ryan Harrison