Bumpei Sato defeated Yasutaka Uchiyama 6-4 6-3 in the Japan F9 round of 32 on hard. The upset overturned the form book — Yasutaka Uchiyama came in leading the head-to-head 1–0, but Bumpei Sato had been the form player, winning 1 of their last 6 on hard. Bumpei Sato claimed a first win over Yasutaka Uchiyama in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-06-25 | Japan F7 | R32 | clay | Yasutaka Uchiyama | 6-0 6-4 |
Averages over each player's completed matches in the selected window (2 vs 199). 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. Small sample — read as indicative. About