Jumpei Yamasaki defeated Yuuya Kibi 7-6 6-1 in the Japan F6 round of 32 on hard. The upset overturned the form book — Yuuya Kibi came in leading the head-to-head 2–0, but Jumpei Yamasaki had been the form player, winning 6 of their last 10 on hard. Jumpei Yamasaki claimed a first win over Yuuya Kibi in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2016-03-21 | Japan F3 | R32 | hard | Yuuya Kibi | 6-3 7-5 |
| 2015-06-08 | Japan F6 | R16 | hard | Yuuya Kibi | 7-6(3) 6-2 |
Averages over each player's completed matches in the selected window (198 vs 14). 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