Hsin Han Lee defeated Yuichi Ito 7-5 6-1 in the Japan F8 quarter-final on clay. The upset overturned the form book — Yuichi Ito came in leading the head-to-head 2–1. Hsin Han Lee narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-06-14 | Japan F6 | QF | carpet | Yuichi Ito | 6-0 6-2 |
| 2009-10-12 | Japan F8 | R16 | hard | Yuichi Ito | 3-6 7-5 6-1 |
| 2008-06-16 | Japan F5 | R32 | carpet | Hsin Han Lee | 6-4 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.