Tennis›Challenger Men - Singles: Istanbul 2 (Turkey), HardC. Bittoun 1-2 D. Ostapenkov: Result, 4 Aug 2026Challenger Men - Singles: Istanbul 2 (Turkey), Hard · 12:45FT↑#457↓#529CBC.Bittoun6361vsDOD.Ostapenkov367218+ | Gamble responsiblyMatchStatsH2HScore123Ostapenkov#529▼367Bittoun#457▲636WinnerD. OstapenkovRankingsBittoun#457▲Ostapenkov#529▼Match InfoTournamentChallenger Men - Singles: Istanbul 2 (Turkey), HardDate04 Aug 2026Loading H2H