Yokohama challenger · ATP
Yokohama challenger 2023
ChallengerHardYokohama, Japan19 November – 26 November 2023Prize money: 80,000 USD49 matchesAltitude: 26 mCourt: Medium-slow
Champion Yosuke Watanuki · Final: 7-6(7) 6-7(1) 7-6(4)
Final rounds
| Final | Yosuke Watanuki vs Yuta Shimizu | 7-6(5) 6-4 |
| Semifinal | Yosuke Watanuki vs Michael Mmoh | 6-4 6-7(2) 6-0 |
| Semifinal | Yuta Shimizu vs Yasutaka Uchiyama | w/o |
| Quarterfinal | Michael Mmoh vs Luca Nardi | 7-6(6) 2-6 6-4 |
| Quarterfinal | Yosuke Watanuki vs Giovanni Fonio | 3-6 6-2 6-1 |
| Quarterfinal | Yasutaka Uchiyama vs Li Tu | 7-6(1) 7-5 |
| Quarterfinal | Yuta Shimizu vs Coleman Wong | 7-6(7) 6-7(1) 7-6(4) |
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