2026 Yokohama Challenger Entry List: Mochizuki, Watanuki and Nishioka Headline Japanese Field
The 2026 Yokohama Challenger entry list features Shintaro Mochizuki, Stefanos Sakellaridis, Taro Daniel and former World No. 24 Yoshihito Nishioka among 21 initial main-draw entrants.
The ATP Challenger 75 tournament runs November 23–29 on outdoor hard courts at Keio University in Yokohama, Japan.
Nine Japanese players are entered, including former champions Yosuke Watanuki and Yuta Shimizu. Watanuki arrives fresh off winning the Taipei Challenger on November 8.
Can Watanuki Win Yokohama Again?
Yosuke Watanuki just won in Taipei. Shintaro Mochizuki leads the entry list, and Yoshihito Nishioka is looking to climb the rankings. Think you know who comes out on top? Explore tennis prediction markets on Polymarket.
Explore Tennis Markets on PolymarketAffiliate link. We may earn a commission. Prediction markets involve financial risk. Availability varies by location. 18+ or applicable legal age. Trade responsibly.
2026 Yokohama Challenger Entry List
| Rank | Player | Nation |
|---|---|---|
| 125 | Shintaro Mochizuki |  JPN |
| 129 | Stefanos Sakellaridis |  GRE |
| 178 | Taro Daniel | JPN |
| 189 | Dylan Dietrich |  SUI |
| 192 | Keegan Smith |  USA |
| 199 | David Jordá Sanchis |  ESP |
| 212 | Liam Broady |  GBR |
| 219 | Rio Noguchi | JPN |
| 230 | Chun-Hsin Tseng |  TWN |
| 232 | Billy Harris | GBR |
| 247 | Hayato Matsuoka | JPN |
| Rank | Player | Nation |
|---|---|---|
| 252 | Jay Friend | JPN |
| 276 | Mili Poljičak |  CRO |
| 305 | Daniel Michalski |  POL |
| 313 | Max Schoenhaus |  GER |
| 367 | Jie Cui |  CHN |
| 375 | Yosuke Watanuki | JPN |
| 377 | Ognjen Milić |  SRB |
| 395 | Yoshihito Nishioka | JPN |
| 401 | Kaichi Uchida | JPN |
| 405 | Yuta Shimizu | JPN |
Rankings reflect the initial entry list. The field is subject to withdrawals, wild cards and qualifying additions.
Rankings reflect the supplied initial entry list and may differ from current rankings. Withdrawals, wild cards and qualifying results will change the final field.
Qualifying: November 22–23. The 24-player qualifying field has not been confirmed yet.
Three Yokohama Challenger Entry List Storylines
Yosuke Watanuki is back in business
Watanuki won the Taipei Challenger on November 8, defeating Jan Kumstat 7-6(2), 7-5 in the final after coming through qualifying.
The former World No. 72 also won Yokohama in 2023. His ranking on the initial entry list is misleading. He’s winning matches again, and that could trouble the rest of the field.
Shintaro Mochizuki leads the field
Mochizuki enters at No. 125, just four ranking places ahead of Greece’s Stefanos Sakellaridis. The Japanese player reached the Jinan Challenger semifinals in October but followed that with opening-round losses in Brest and Bratislava.
There’s an opportunity here, but he needs to find some consistency. Sakellaridis, meanwhile, has another opportunity to collect valuable ranking points after his scheduled appearance in Kobe.
Former champions and familiar faces
Yuta Shimizu won Yokohama in 2024 and reached the Taipei semifinals last week. Kaichi Uchida finished runner-up to Rei Sakamoto here in 2025, losing a three-set final.
Yoshihito Nishioka, a three-time ATP Tour champion and former World No. 24, is another name to watch. His No. 395 entry ranking doesn’t tell the whole story.
2026 Yokohama Challenger Tournament Facts
| Detail | Information |
|---|---|
| Official name | Yokohama Keio Challenger |
| Location | Yokohama, Japan |
| Venue | Keio University Hiyoshi Campus |
| Dates | November 23–29, 2026 |
| Qualifying | November 22–23 |
| Category | ATP Challenger 75 |
| Surface | Outdoor hard (DecoTurf) |
| Prize money | $107,000 + hospitality |
| Singles draw | 32 players |
| Champion’s points | 75 |
| 2025 champion | Rei Sakamoto (JPN) |
| Official website | Keio Challenger |
The final field will be updated as withdrawals, wild cards and qualifying entries are confirmed.
Phil Naessens has spent decades in sports as a broadcaster, author, journalist, professional tennis coach, and betting analyst. As the founder and editor of Crush & Rush News and host of the Crush & Rush Tennis Podcast, he combines firsthand coaching experience with years of sports media and publishing to deliver thoughtful tennis analysis, tournament coverage, player features, and transparent betting insights built around value, and not hype.
