Yuuya Kibi defeated Takuto Niki 6-3 4-6 6-3 in the Japan F8 round of 32 on hard. The upset overturned the form book — Takuto Niki came in leading the head-to-head 6–0. Yuuya Kibi claimed a first win over Takuto Niki in seven meetings, narrowing the head-to-head to 6–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2018-03-05 | Japan F1 | R16 | hard | Takuto Niki | 6-3 7-5 |
| 2015-03-09 | Japan F1 | F | hard | Takuto Niki | 6-3 |
| 2014-06-02 | Japan F5 | F | clay | Takuto Niki | 6-4 3-6 6-1 |
| 2014-03-24 | Japan F3 | SF | hard | Takuto Niki | 6-2 7-6(7) |
| 2012-06-18 | Japan F6 | R32 | grass | Takuto Niki | 7-5 6-4 |
| 2011-06-27 | Japan F8 | R32 | clay | Takuto Niki | 7-6(7) 6-3 |
Averages over each player's completed matches in the selected window (145 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