Ryota Tanuma defeated Takuto Niki 6-4 7-5 in the Japan F4 round of 32 on hard. The upset overturned the form book — Takuto Niki came in leading the head-to-head 1–0, but Ryota Tanuma had been the form player, winning 3 of their last 7 on hard. Ryota Tanuma claimed a first win over Takuto Niki in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2016-10-17 | Chinese Taipei F2 | QF | hard | Takuto Niki | 6-4 7-5 |
Averages over each player's completed matches in the selected window (200 vs 181). 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