Yusuke Kusuhara defeated Hikaru Shiraishi 3-6 7-6 6-1 in the M15 Osaka 1 quarter-final on hard. The upset overturned the form book — Hikaru Shiraishi came in ranked #488, leading the head-to-head 4–0. Yusuke Kusuhara claimed a first win over Hikaru Shiraishi in five meetings, narrowing the head-to-head to 4–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-10-27 | M15 Tanagura 1 | F | hard | Hikaru Shiraishi | 6-3 6-4 |
| 2025-07-05 | M15 Tokyo 1 | SF | hard | Hikaru Shiraishi | 6-7(6) 6-1 7-6(5) |
| 2024-03-27 | M15 Tsukuba 1 | R32 | hard | Hikaru Shiraishi | 6-3 6-2 |
| 2023-03-27 | M25 Tsukuba 1 | Q32 | hard | Hikaru Shiraishi | 6-4 6-1 |
Averages over each player's completed matches in the selected window (12 vs 25). 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