Takuto Niki defeated Keisuke Watanuki 6-7 7-6 6-4 in the Japan F6 round of 16 on hard. 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 |
|---|---|---|---|---|---|
| 2016-06-06 | Japan F7 | R32 | hard | Keisuke Watanuki | 6-4 7-6(6) |
| 2016-03-07 | Japan F1 | R32 | hard | Takuto Niki | 7-5 6-2 |
| 2014-03-24 | Japan F3 | R32 | hard | Takuto Niki | 6-3 6-1 |
Averages over each player's completed matches in the selected window (200 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