Danai Udomchoke defeated Ryuso Tsujino 6-1 6-3 in the Indonesia F6 qualifying round on hard. The result followed the form book — Danai Udomchoke came in leading the head-to-head 2–0. Danai Udomchoke extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-06-07 | Japan 1 Masters 2 | R16 | hard | Danai Udomchoke | 6-1 6-2 |
| 1998-05-04 | China F1 | R32 | hard | Danai Udomchoke | 7-5 3-6 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.