The 2022 Keio Challenger was a professional tennis tournament played on hard courts. It was the 15th (men's) and 5th (women's) editions of the tournament and part of the 2022 ATP Challenger Tour and the 2022 ITF Women's World Tennis Tour. It took place in Yokohama, Japan between 31 October and 13 November 2022.
Men's singles main-draw entrants
Seeds Country Player Rank1 SeedChristopher O'Connell1001John Millman1422Kaichi Uchida1683Damir Džumhur1804Wu Tung-lin2075Hiroki Moriya2136Yosuke Watanuki2237Zdeněk Kolář2358 1 Rankings are as of 24 October 2022.
Other entrants The following players received wildcards into the singles main draw: Tomoya Fujiwara Shinji Hazawa Masamichi Imamura
The following players received entry into the singles main draw using protected rankings: Tatsuma Ito Yūichi Sugita
The following players received entry from the qualifying draw: Hong Seong-chan Taisei Ichikawa Yuki Mochizuki Jonathan Mridha Ryota Tanuma James Trotter
The following player received entry as a lucky loser: Rimpei Kawakami
Women's singles main-draw entrants
Seeds Country Player Rank1 SeedHan Na-lae1851Mai Hontama2602Kyōka Okamura3043Himeno Sakatsume3054Sakura Hosogi3165Luksika Kumkhum3306Haruka Kaji3377Chihiro Muramatsu3488 1 Rankings are as of 31 October 2022.
Other entrants The following players received wildcards into the singles main draw: Anri Nagata Remika Ohashi Suzuho Oshino Karen Tsutsumi
The following player received entry into the singles main draw using a protected ranking: Ayano Shimizu
The following players received entry from the qualifying draw: Erina Hayashi Aoi Ito Miyu Kato Natsumi Kawaguchi Honoka Kobayashi Michika Ozeki Himari Satō Eri Shimizu
The following players received entry as a lucky loser: Yuka Hosoki
Champions
Men's singles
Christopher O'Connell def. Yosuke Watanuki 6–1, 6–7(5–7), 6–3.
Women's singles Han Na-lae def. Miyu Kato, 7–5, 6–0
Men's doubles
Victor Vlad Cornea / Ruben Gonzales def. Tomoya Fujiwara / Masamichi Imamura 7–5, 6–3.
Women's doubles Saki Imamura / Naho Sato def. Han Na-lae / Mai Hontama, 6–4, 4–6, [10–5]
References