Ikumi Yamazaki defeated Kyoka Okamura 6-4 7-6 in the W50 Kofu 1 quarter-final on hard. The upset overturned the form book — Kyoka Okamura came in ranked #283, leading the head-to-head 1–0, but Ikumi Yamazaki had been the form player, winning 3 of their last 5 on hard. Ikumi Yamazaki claimed a first win over Kyoka Okamura in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2024-09-26 | W50 Nanao 1 | R16 | carpet | Kyoka Okamura | 6-3 6-4 |
Averages over each player's completed matches in the selected window (105 vs 101). 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