Yasutaka Uchiyama defeated Keita Koyama 4-6 6-1 6-2 in the Japan F8 round of 16 on clay. Yasutaka Uchiyama claimed a first win over Keita Koyama in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-06-20 | Japan F7 | R32 | grass | Keita Koyama | 6-3 3-0 |
Averages over each player's completed matches in the selected window (199 vs 1). 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