Jumpei Yamasaki defeated Kento Takeuchi 6-3 6-3 in the Yokohama CH qualifying round 1 on hard. The upset overturned the form book — Kento Takeuchi came in 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 Kento Takeuchi in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2018-05-14 | China F6 | R16 | hard | Kento Takeuchi | 6-4 4-6 7-6(1) |
Averages over each player's completed matches in the selected window (197 vs 100). 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