Zhangjiagang challenger · ATP
Zhangjiagang challenger 2025
ChallengerHardZhangjiagang, China24 August – 31 August 2025Prize money: 100,000 USD49 matchesAltitude: 11 mCourt: Medium
Champion Sho Shimabukuro · Final: 6-3 6-4
Final rounds
| Final | Sho Shimabukuro vs Oliver Crawford | 6-3 3-6 7-5 |
| Semifinal | Oliver Crawford vs Kokoro Isomura | 7-6(1) 6-0 |
| Semifinal | Sho Shimabukuro vs Yasutaka Uchiyama | 6-3 7-6(5) |
| Quarterfinal | Oliver Crawford vs Renta Tokuda | 7-6(1) 3-6 6-2 |
| Quarterfinal | Kokoro Isomura vs Sanhui Shin | 2-6 6-2 6-4 |
| Quarterfinal | Sho Shimabukuro vs Ilia Simakin | 6-4 6-3 |
| Quarterfinal | Yasutaka Uchiyama vs Kaichi Uchida | 6-3 6-4 |
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