Oh Hee Kwon defeated Koichi Sano 6-2 3-6 6-0 in the Korea F6 qualifying round of 16 on clay. The upset overturned the form book — Koichi Sano came in leading the head-to-head 1–0. Oh Hee Kwon claimed a first win over Koichi Sano in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-06-15 | Japan F7 | R32 | carpet | Koichi Sano | 6-3 3-6 6-4 |
Averages over each player's completed matches in the selected window (17 vs 8). ATP, WTA & Challenger.
wins 47% of points on serve vs Hee Kwon O.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About