Danai Udomchoke defeated Tetsuya Chaen 6-3 6-0 in the Indonesia F4 round of 16 on hard. Danai Udomchoke extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-06-07 | Japan 1 Masters 1 | R16 | hard | Tetsuya Chaen | 6-4 4-6 6-0 |
| 1998-11-25 | Japan F6 | R16 | hard | Danai Udomchoke | 7-5 6-2 |
Averages over each player's completed matches in the selected window (89 vs 1). 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. Small sample — read as indicative. About