Riko Kikawada defeated Yuna Sugiyama 6-4 6-2 in the W15 Sapporo 1 q32 on hard. The upset overturned the form book — Yuna Sugiyama came in leading the head-to-head 2–0. Riko Kikawada claimed a first win over Yuna Sugiyama in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-05-12 | W15 Toyama 1 | Q32 | hard | Yuna Sugiyama | 6-4 2-1 |
| 2024-10-27 | W35 Makinohara 1 | Q32 | carpet | Yuna Sugiyama | 3-6 6-3 10-8 |
Averages over each player's completed matches in the selected window (71 vs 5). 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