Sho Katayama defeated Takuto Niki 3-6 7-6 6-4 in the Japan F2 round of 16 on hard. The upset overturned the form book — Takuto Niki came in leading the head-to-head 4–1, but Sho Katayama had been the form player, winning 5 of their last 7 on hard. Sho Katayama narrowed the head-to-head to 4–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-04-10 | M25 Matsuyama 1 | R32 | hard | Takuto Niki | 6-2 6-3 |
| 2019-03-21 | M15 Kofu 1 | R16 | hard | Takuto Niki | 4-6 7-6(2) 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 |
| 2010-03-29 | Japan F3 | R16 | hard | Takuto Niki | 7-6(2) 7-6(6) |
Averages over each player's completed matches in the selected window (29 vs 133). 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