Montinee Tangphong defeated Napaporn Tongsalee 6-2 0-6 6-3 in the Nakhon Ratchasima 10K round of 16 on hard. The upset overturned the form book — Napaporn Tongsalee came in leading the head-to-head 2–1. Montinee Tangphong narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-04-30 | Incheon 25K | R32 | hard | Napaporn Tongsalee | 6-2 3-6 6-1 |
| 2006-05-22 | Beijing 50K | QF | hard | Napaporn Tongsalee | 6-4 6-2 |
| 2006-02-20 | St Paul MN 50K | R32 | hard | Montinee Tangphong | 6-7(4) 7-6(2) 7-6(5) |