Arata Onozawa defeated Toshihide Matsui 6-2 1-6 6-3 in the Japan F8 qualifying round on hard. The upset overturned the form book — Toshihide Matsui came in leading the head-to-head 3–0. Arata Onozawa claimed a first win over Toshihide Matsui in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-12-09 | Cambodia F3 | R16 | hard | Toshihide Matsui | 6-3 1-6 7-6(5) |
| 2010-10-18 | Japan F10 | R16 | hard | Toshihide Matsui | 6-3 6-1 |
| 2008-05-12 | Korea Rep F3 | R32 | hard | Toshihide Matsui | 7-6(8) 4-6 6-1 |
Averages over each player's completed matches in the selected window (13 vs 88). 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