Ryota Tanuma defeated Jumpei Yamasaki 6-7 6-3 10-2 in the M25 Sapporo 2 q16 on hard. The upset overturned the form book — Jumpei Yamasaki came in ranked #1038, leading the head-to-head 1–0. Ryota Tanuma claimed a first win over Jumpei Yamasaki in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-03-23 | M15 Kofu 1 | SF | hard | Jumpei Yamasaki | 6-2 6-4 |
Averages over each player's completed matches in the selected window (20 vs 37). 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