Arata Onozawa defeated Yuichi Ito 2-6 6-3 6-1 in the Japan F6 round of 16 on carpet. The upset overturned the form book — Yuichi Ito came in leading the head-to-head 4–1. Arata Onozawa narrowed the head-to-head to 4–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2016-04-04 | Japan F5 | R16 | hard | Yuichi Ito | 1-6 7-6(3) 6-4 |
| 2013-06-24 | Japan F7 | R16 | clay | Arata Onozawa | 6-4 5-7 6-3 |
| 2009-08-03 | China F5 | R32 | hard | Yuichi Ito | 6-0 6-1 |
| 2008-03-31 | Japan F3 | R16 | hard | Yuichi Ito | 6-3 6-1 |
| 2006-06-26 | Japan F8 | R32 | hard | Yuichi Ito | 6-4 7-5 |
Averages over each player's completed matches in the selected window (46 vs 65). 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