2022 Keio Challenger
The 2022 Keio Challenger was a professional tennis tournament played on hard courts. It was the 15th and 5th 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
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 from the qualifying draw:
- Hong Seong-chan
- Taisei Ichikawa
- Yuki Mochizuki
- Jonathan Mridha
- Ryota Tanuma
- James Trotter
- Rimpei Kawakami
Women's singles main-draw entrants
Seeds
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 players received entry from the qualifying draw:
- Erina Hayashi
- Aoi Ito
- Miyu Kato
- Natsumi Kawaguchi
- Honoka Kobayashi
- Michika Ozeki
- Himari Satō
- Eri Shimizu
- Yuka Hosoki