Astana 4 challenger · ATP
Astana 4 challenger 2026
ChallengerHardAstana, Kazakhstan9 August – 16 August 2026Prize money: 63,000 USD49 matchesAltitude: 357 mCourt: Slow
Champion Hayato Matsuoka · Final: 6-2 6-1
Final rounds
| Final | Hayato Matsuoka vs Aziz Dougaz | 0-6 6-1 7-6(5) |
| Semifinal | Aziz Dougaz vs Sergey Fomin | 4-6 6-1 7-5 |
| Semifinal | Hayato Matsuoka vs Khumoun Sultanov | 3-6 6-3 6-4 |
| Quarterfinal | Aziz Dougaz vs Jie Cui | 6-2 4-6 7-5 |
| Quarterfinal | Khumoun Sultanov vs Mert Alkaya | 7-6(5) 6-3 |
| Quarterfinal | Hayato Matsuoka vs Fajing Sun | 7-5 7-5 |
| Quarterfinal | Sergey Fomin vs Masamichi Imamura | 6-2 6-1 |
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