Yuta Shimizu defeated Takuto Niki 6-4 6-4 in the M15 Chiang Rai 3 round of 16 on hard. The upset overturned the form book — Takuto Niki came in leading the head-to-head 3–1, but Yuta Shimizu had been the form player, winning 3 of their last 7 on hard. Yuta Shimizu narrowed the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-06-21 | M15 Gimcheon 2 | QF | hard | Yuta Shimizu | 6-2 7-6(6) |
| 2019-03-15 | M15 Nishi-Tokyo 1 | QF | hard | Takuto Niki | 7-6(5) 1-6 6-3 |
| 2018-04-02 | Japan F5 | R32 | hard | Takuto Niki | 6-2 6-4 |
| 2017-03-20 | Japan F3 | R32 | hard | Takuto Niki | 6-1 3-6 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.
Shimizu Y.: 5 days rest · 2 matches, 48 games (7d). Higher means fresher. About