2012 Rakuten Japan Open Tennis Championships

The 2012 Rakuten Japan Open Tennis Championships was a men's tennis tournament played on outdoor hard courts. It was the 39th edition of the event known this year as the Rakuten Japan Open Tennis Championships, and part of the 500 Series of the 2012 ATP World Tour. It was held at the Ariake Coliseum in Tokyo, Japan, from October 1 till October 7, 2012. Kei Nishikori won the singles title

Seeds

 * 1 Rankings are based on the rankings of September 24, 2012.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇯🇵 Tatsuma Ito
 * 🇯🇵 Hiroki Moriya
 * 🇯🇵 Yūichi Sugita

The following players received entry from the qualifying draw:
 * Marco Chiudinelli
 * 🇧🇬 Grigor Dimitrov
 * 🇺🇦 Sergiy Stakhovsky
 * 🇷🇺 Dmitry Tursunov

The following player received entry as lucky loser:
 * Ivo Karlović

Withdrawals

 * 🇺🇸 Mardy Fish
 * 🇫🇷 Gaël Monfils (right knee injury)

Retirements

 * 🇷🇸 Viktor Troicki (calf muscle injury)

Seeds

 * Rankings are as of September 24, 2012

Other entrants
The following pairs received wildcards into the doubles main draw:
 * 🇯🇵 Hiroki Moriya / 🇯🇵 Takao Suzuki
 * 🇯🇵 Yūichi Sugita / 🇯🇵 Yasutaka Uchiyama

Retirements

 * 🇷🇸 Janko Tipsarević (tonsillitis)

Singles
🇯🇵 Kei Nishikori defeated 🇨🇦 Milos Raonic, 7–6(7–5), 3–6, 6–0

Doubles
🇦🇹 Alexander Peya / 🇧🇷 Bruno Soares defeated 🇮🇳 Leander Paes / 🇨🇿 Radek Štěpánek, 6–3, 7–6(7–5)