Chan Yeong Oh defeated Masaya Kobayashi 6-2 3-6 6-3 in the Japan F7 qualifying round of 16 on hard. The result followed the form book — Chan Yeong Oh came in leading the head-to-head 1–0. Chan Yeong Oh extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2017-03-20 | Japan F3 | R32 | hard | Chan Yeong Oh | 6-4 6-2 |
Averages over each player's completed matches in the selected window (91 vs 11). 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