| 2022 Keio Challenger | |
|---|---|
| Date | 31 October – 6 November (men's) 7 – 13 November (women's) | 
| Edition | 15th (men's) 5th (women's) | 
| Category | ATP Challenger Tour ITF Women's World Tennis Tour | 
| Surface | Hard | 
| Location | Yokohama, Japan | 
| Champions | |
| Men's singles | |
| .svg.png.webp) Christopher O'Connell | |
| Women's singles | |
|  Han Na-lae | |
| Men's doubles | |
|  Victor Vlad Cornea /  Ruben Gonzales | |
| Women's doubles | |
|  Saki Imamura /  Naho Sato | |
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 | Seed | 
|---|---|---|---|
| .svg.png.webp) AUS | Christopher O'Connell | 100 | 1 | 
| .svg.png.webp) AUS | John Millman | 142 | 2 | 
|  JPN | Kaichi Uchida | 168 | 3 | 
|  BIH | Damir Džumhur | 180 | 4 | 
|  TPE | Wu Tung-lin | 207 | 5 | 
|  JPN | Hiroki Moriya | 213 | 6 | 
|  JPN | Yosuke Watanuki | 223 | 7 | 
|  CZE | Zdeněk Kolář | 235 | 8 | 
- 1 Rankings are as of 24 October 2022.[1]
Other entrants
The following players received wildcards into the singles main draw:
 Tomoya Fujiwara Tomoya Fujiwara
 Shinji Hazawa Shinji Hazawa
 Masamichi Imamura Masamichi Imamura
The following players received entry into the singles main draw using protected rankings:
The following players received entry from the qualifying draw:
 Hong Seong-chan Hong Seong-chan
 Taisei Ichikawa Taisei Ichikawa
 Yuki Mochizuki Yuki Mochizuki
 Jonathan Mridha Jonathan Mridha
 Ryota Tanuma Ryota Tanuma
 James Trotter James Trotter
The following player received entry as a lucky loser:
 Rimpei Kawakami Rimpei Kawakami
Women's singles main-draw entrants
Seeds
| Country | Player | Rank1 | Seed | 
|---|---|---|---|
|  KOR | Han Na-lae | 185 | 1 | 
|  JPN | |||
|  JPN | Kyōka Okamura | 304 | 3 | 
|  JPN | Himeno Sakatsume | 305 | 4 | 
|  JPN | Sakura Hosogi | 316 | 5 | 
|  THA | Luksika Kumkhum | 330 | 6 | 
|  JPN | Haruka Kaji | 337 | 7 | 
|  JPN | Chihiro Muramatsu | 348 | 8 | 
- 1 Rankings are as of 31 October 2022.
Other entrants
The following players received wildcards into the singles main draw:
 Anri Nagata Anri Nagata
 Remika Ohashi Remika Ohashi
 Suzuho Oshino Suzuho Oshino
 Karen Tsutsumi Karen Tsutsumi
The following player received entry into the singles main draw using a protected ranking:
The following players received entry from the qualifying draw:
 Erina Hayashi Erina Hayashi
 Aoi Ito Aoi Ito
 Miyu Kato Miyu Kato
 Natsumi Kawaguchi Natsumi Kawaguchi
 Honoka Kobayashi Honoka Kobayashi
 Michika Ozeki Michika Ozeki
 Himari Sato Himari Sato
 Eri Shimizu Eri Shimizu
The following players received entry as a lucky loser:
 Yuka Hosoki Yuka Hosoki
Champions
Men's singles
.svg.png.webp) Christopher O'Connell def. Christopher O'Connell def. Yosuke Watanuki 6–1, 6–7(5–7), 6–3. Yosuke Watanuki 6–1, 6–7(5–7), 6–3.
Women's singles
 Han Na-lae def. Han Na-lae def. Miyu Kato, 7–5, 6–0 Miyu Kato, 7–5, 6–0
Men's doubles
 Victor Vlad Cornea / Victor Vlad Cornea / Ruben Gonzales def. Ruben Gonzales def. Tomoya Fujiwara / Tomoya Fujiwara / Masamichi Imamura 7–5, 6–3. Masamichi Imamura 7–5, 6–3.
Women's doubles
 Saki Imamura / Saki Imamura / Naho Sato def. Naho Sato def. Han Na-lae / Han Na-lae / Mai Hontama, 6–4, 4–6, [10–5] Mai Hontama, 6–4, 4–6, [10–5]
References
- ↑ "Rankings | Singles | ATP Tour | Tennis". ATP Tour.