Jay Lin Gibson defeated N. Koizumi 3-6 6-3 10-8 in the M15 Karuizawa 1 q16 on clay. The upset overturned the form book — N. Koizumi came in leading the head-to-head 1–0. Jay Lin Gibson claimed a first win over N. Koizumi in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-06-02 | M15 Karuizawa 1 | Q16 | clay | N. Koizumi | 6-2 6-1 |
Averages over each player's completed matches in the selected window (11 vs 10). ATP, WTA & Challenger.
wins 53% of points on serve vs Koizumi N.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About