Istanbul challenger · ATP
Istanbul challenger 2025
ChallengerHardIstanbul, Türkiye31 August – 7 September 2025Prize money: 100,000 USD49 matchesAltitude: 32 mCourt: Medium-slow
Champion Alex Molcan · Final: 7-5 6-7(3) 6-2
Final rounds
| Final | Alex Molcan vs Nicolas Mejia | 7-6(9) 6-2 |
| Semifinal | Nicolas Mejia vs Luca Potenza | 6-3 6-1 |
| Semifinal | Alex Molcan vs Stefanos Sakellaridis | 6-2 6-4 |
| Quarterfinal | Alex Molcan vs Abedallah Shelbayh | 4-6 6-1 7-6(5) |
| Quarterfinal | Luca Potenza vs Calvin Hemery | 6-4 7-6(5) |
| Quarterfinal | Nicolas Mejia vs Milos Karol | 6-2 7-6(1) |
| Quarterfinal | Stefanos Sakellaridis vs Hugo Grenier | 7-5 6-7(3) 6-2 |
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