Takuto Niki defeated Hiromasa Oku 6-2 6-3 in the Japan F5 qualifying round on clay. The result followed the form book — Takuto Niki came in leading the head-to-head 2–1. Takuto Niki extended the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2016-05-30 | Japan F6 | R32 | clay | Hiromasa Oku | 6-2 6-3 |
| 2014-03-17 | Japan F2 | R32 | hard | Takuto Niki | 7-6(5) 6-3 |
| 2011-06-06 | Japan F5 | R16 | clay | Takuto Niki | 1-6 6-2 6-0 |
Averages over each player's completed matches in the selected window (200 vs 19). 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