Arata Onozawa defeated Yusuke Watanuki 6-4 6-3 in the Toyota CH round of 32 on hard. The result followed the form book — Arata Onozawa came in leading the head-to-head 4–0. Arata Onozawa extended the head-to-head to 5–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-06-25 | Japan F7 | R32 | clay | Arata Onozawa | 6-3 6-1 |
| 2012-04-09 | China F5 | R16 | hard | Arata Onozawa | 6-3 6-4 |
| 2012-03-12 | Japan F1 | R16 | hard | Arata Onozawa | 6-2 6-3 |
| 2010-06-28 | Japan F8 | R32 | clay | Arata Onozawa | 7-6(4) 6-2 |
Averages over each player's completed matches in the selected window (45 vs 51). 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