The 2018 Rakuten Japan Open Tennis Championships was a men's tennis tournament played on indoor hard courts. It was the 45th edition of the Japan Open, and part of the 500 Series of the 2018 ATP World Tour. It was held at the Musashino Forest Sport Plaza in Tokyo, Japan, from October 1–7, 2018. Points and prize money Point distribution Prize money Singles main-draw entrants Seeds 1 Rankings are as of September 24, 2018. Other entrants The following players received wildcards into the singles main draw: Taro Daniel Yoshihito Nishioka Yūichi Sugita The following player received entry as a special exempt: Taylor Fritz The following players received entry from the qualifying draw: Martin Kližan Denis Kudla Daniil Medvedev Yosuke Watanuki Withdrawals Before the tournament David Goffin → replaced by Matthew Ebden Lucas Pouille → replaced by Jan-Lennard Struff Doubles main-draw entrants Seeds Rankings are as of September 24, 2018. Other entrants The following pairs received wildcards into the doubles main draw: Yoshihito Nishioka / Kaito Uesugi Joe Salisbury / Yasutaka Uchiyama The following pair received entry from the qualifying draw: Fabrice Martin / Gilles Simon Champions Singles Daniil Medvedev def. Kei Nishikori 6–2, 6–4 Doubles Ben McLachlan / Jan-Lennard Struff def. Raven Klaasen / Michael Venus 6–4, 7–5 References External links Rakuten Japan Open Tennis Championships Japan Open (tennis) Rakuten Japan Open Tennis Championships Japan Open Tennis Championships