Keisuke Saitoh defeated Tsung Hao Huang 6-2 6-3 in the M15 Kashiwa 1 round of 32 on hard. The upset overturned the form book — Tsung Hao Huang came in ranked #632, leading the head-to-head 3–0. Keisuke Saitoh claimed a first win over Tsung Hao Huang in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2026-08-18 | M25 Taipei | R32 | hard | Tsung Hao Huang | 6-2 7-5 |
| 2024-08-07 | M25 Taipei 2 | R32 | hard | Tsung Hao Huang | 6-3 6-2 |
| 2022-08-04 | M15 Kuching 1 | R16 | hard | Tsung Hao Huang | 6-1 6-0 |
Averages over each player's completed matches in the selected window (88 vs 125). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About