Andrew Foster defeated Tetsuya Sato 6-0 6-4 in the Malaysia 2 Masters 1 round of 16 on hard. The upset overturned the form book — Tetsuya Sato came in leading the head-to-head 1–0, but Andrew Foster had been the form player, winning 4 of their last 8 on hard. Andrew Foster claimed a first win over Tetsuya Sato in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-11-04 | Japan Masters 1 | R32 | hard | Tetsuya Sato | 4-6 6-1 6-0 |