Alexei Popyrin defeated Yosuke Watanuki 4-6 6-1 6-4 in the Tokyo qualifying round 1 on hard. The result followed the form book — Alexei Popyrin came in ranked #90, leading the head-to-head 2–0. Alexei Popyrin extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-08-23 | Winston-Salem | Q2 | hard | Alexei Popyrin | 6-2 4-6 6-1 |
| 2019-09-30 | Tokyo | Q1 | hard | Alexei Popyrin | 4-6 6-1 6-4 |
Averages from each player's recent completed matches (20 vs 20). ATP, WTA & Challenger.