Jumpei Yamasaki defeated Yusuke Takahashi 6-3 6-1 in the M15 Kofu 1 quarter-final on hard. The upset overturned the form book — Yusuke Takahashi came in ranked #679, leading the head-to-head 1–0, but Jumpei Yamasaki had been the form player, winning 6 of their last 10 on hard. Jumpei Yamasaki claimed a first win over Yusuke Takahashi in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-07-25 | M25 Taipei 2 | R16 | hard | Yusuke Takahashi | 6-2 6-2 |
Averages over each player's completed matches in the selected window (16 vs 166). 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