Roland So defeated Laurence Tieleman 6-4 4-6 6-3 in the Chinese Taipei Masters 1 semi-final on hard. The upset overturned the form book — Laurence Tieleman came in leading the head-to-head 2–0, but Roland So had been the form player, winning 2 of their last 7 on hard. Roland So claimed a first win over Laurence Tieleman in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-07-15 | Malaysia 2 Masters 2 | R16 | hard | Laurence Tieleman | 6-3 6-3 |
| 1991-02-09 | Philippines Thailand Masters 4 | R16 | hard | Laurence Tieleman | 6-3 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.