Takuto Niki defeated Sho Katayama 7-6 7-6 in the Japan F3 round of 16 on hard. The upset overturned the form book — Sho Katayama came in leading the head-to-head 2–1, but Takuto Niki had been the form player, winning 5 of their last 10 on hard. Takuto Niki narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2017-03-13 | Japan F2 | R16 | hard | Sho Katayama | 3-6 7-6(3) 6-4 |
| 2016-04-04 | Japan F5 | QF | hard | Sho Katayama | 6-7(5) 6-2 6-3 |
| 2012-03-19 | Japan F2 | QF | hard | Takuto Niki | 6-4 6-3 |
Averages over each player's completed matches in the selected window (88 vs 17). 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