Takashi Saito defeated Takuto Niki 7-6 6-3 in the Japan F6 semi-final on hard. The upset overturned the form book — Takuto Niki came in leading the head-to-head 2–0, but Takashi Saito had been the form player, winning 3 of their last 7 on hard. Takashi Saito claimed a first win over Takuto Niki in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-03-27 | M15 Tsukuba 1 | R32 | hard | Takuto Niki | 6-4 6-2 |
| 2015-03-30 | Japan F4 | R32 | hard | Takuto Niki | 7-5 5-7 6-3 |
Averages over each player's completed matches in the selected window (65 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