Oh Hee Kwon defeated Takuto Niki 7-5 3-6 6-4 in the Japan F5 round of 16 on clay. The upset overturned the form book — Takuto Niki came in leading the head-to-head 2–0. Oh Hee Kwon claimed a first win over Takuto Niki in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-06-18 | Japan F6 | R16 | grass | Takuto Niki | 7-5 6-4 |
| 2012-06-11 | Japan F5 | R16 | clay | Takuto Niki | 7-6(4) 6-1 |
Averages over each player's completed matches in the selected window (17 vs 200). 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