Seung Ho Ji defeated Laurence Tieleman 1-6 6-2 6-3 in the Philippines Thailand Masters 1 round of 32 on hard. The upset overturned the form book — Laurence Tieleman came in leading the head-to-head 2–0, but Seung Ho Ji had been the form player, winning 4 of their last 7 on hard. Seung Ho Ji claimed a first win over Laurence Tieleman in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1992-07-13 | Malaysia 2 Masters 3 | SF | hard | Laurence Tieleman | 6-4 6-2 |
| 1991-02-09 | Philippines Thailand Masters 2 | R16 | hard | Laurence Tieleman | 6-3 3-6 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.