Felix Barrientos defeated Laurence Tieleman 7-5 6-1 in the Philippines Thailand Masters 2 qualifying round on hard. The upset overturned the form book — Laurence Tieleman came in leading the head-to-head 1–0, but Felix Barrientos had been the form player, winning 3 of their last 7 on hard. Felix Barrientos claimed a first win over Laurence Tieleman in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-02-09 | Philippines Thailand Masters 4 | SF | hard | Laurence Tieleman | 6-4 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.