Chin Wei Chan defeated Kumiko Iijima 4-6 6-4 6-4 in the Nagano 25K round of 32 on carpet. The result followed the form book — Chin Wei Chan came in leading the head-to-head 4–0. Chin Wei Chan extended the head-to-head to 5–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-04-30 | Gifu 50K | QF | hard | Chin Wei Chan | 1-6 6-3 6-2 |
| 2005-05-16 | Changwon 25K | R32 | hard | Chin Wei Chan | 6-3 6-1 |
| 2005-02-21 | Taipei 25K | R32 | hard | Chin Wei Chan | 3-6 6-3 6-4 |
| 2003-08-11 | Nakhon Ratchasima 10K | R16 | hard | Chin Wei Chan | 6-4 6-0 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.