Silvio Scaiola defeated Yasufumi Yamamoto 6-1 6-4 in the Philippines Masters 4 qualifying round on clay. The upset overturned the form book — Yasufumi Yamamoto came in leading the head-to-head 1–0. Silvio Scaiola claimed a first win over Yasufumi Yamamoto in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1992-02-24 | Philippines Masters 3 | F | clay | Yasufumi Yamamoto | 7-6 1-6 7-6 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.