Ostrava challenger · ATP
Ostrava challenger 2023
ChallengerClayOstrava, Czechia23 April – 30 April 2023Prize money: 73,000 EUR49 matchesAltitude: 217 mCourt: Slow
Champion Zdenek Kolar · Final: 6-2 2-6 6-4
Final rounds
| Final | Zdenek Kolar vs Mate Valkusz | 6-3 6-2 |
| Semifinal | Mate Valkusz vs Riccardo Bonadio | 6-0 6-4 |
| Semifinal | Zdenek Kolar vs Shintaro Mochizuki | 6-3 2-6 6-2 |
| Quarterfinal | Riccardo Bonadio vs Jiri Vesely | 6-7(5) 6-3 6-4 |
| Quarterfinal | Mate Valkusz vs Frederico Ferreira Silva | 7-6(4) 6-1 |
| Quarterfinal | Shintaro Mochizuki vs Damir Dzumhur | 5-7 6-2 6-3 |
| Quarterfinal | Zdenek Kolar vs Gauthier Onclin | 6-2 2-6 6-4 |
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