The 2017 Keio Challenger was a professional tennis tournament played on hard courts. It was the twelfth (ATP) and first (ITF) editions of the tournament and part of the 2017 ATP Challenger Tour and the 2017 ITF Women's Circuit. The tournament offered $50,000+H in prize money for the men and $25,000 prize money for the women. It took place in Yokohama, Japan between 27 February and 5 March 2017 for the men's edition and between 6 and 12 March 2017 for the women's.

Men's singles main-draw entrants

Seeds Country Player Rank1 SeedYūichi Sugita1141Henri Laaksonen1222Lee Duck-hee1353Go Soeda1364Grega Žemlja1505Ruben Bemelmans1526Zhang Ze1577Andrew Whittington1648 1 Rankings are as of February 20, 2017.

Other entrants The following players received wildcards into the singles main draw: Sora Fukuda Masato Shiga Kaito Uesugi Yosuke Watanuki

The following player received entry into the singles main using a protected ranking: Cedrik-Marcel Stebe

The following player received entry into the singles main draw as a special exemption: Lloyd Harris

The following players received entry from the qualifying draw: Brydan Klein Kwon Soon-woo Blake Mott Takuto Niki

Women's singles main-draw entrants

Seeds Country Player Rank1 SeedMiyu Kato2011Laura Robson2072Akiko Omae2293Mayo Hibi2304Shiho Akita2465Junri Namigata2566Galina Voskoboeva2577Kyōka Okamura2598 1 Rankings are as of February 27, 2017.

Other entrants The following players received wildcards into the singles main draw: Sumina Eshiro Hayaka Murase Megumi Nishimoto Suzuho Oshino

The following players received entry from the qualifying draw: Haruna Arakawa Erina Hayashi Miyabi Inoue Haruka Kaji Rio Kitagawa Mai Minokoshi Ramu Ueda Aki Yamasoto

Champions

Men's singles

Yūichi Sugita def. Kwon Soon-woo 6–4, 2–6, 7–6(7–2).

Women's singles Akiko Omae def. Mayo Hibi 7–5, 6–2.

Men's doubles

Marin Draganja / Tomislav Draganja def. Joris De Loore / Luke Saville 4–6, 6–3, [10–4].

Women's doubles Ayaka Okuno / Erika Sema def. Kanako Morisaki / Minori Yonehara, 6–4, 6–4.

External links Official Website 2017 Keio Challenger at ITFtennis.com