Jose Francisco Altur defeated Marcelo Filippini 6-1 7-5 in the Umag round of 32 on clay. The upset overturned the form book — Marcelo Filippini came in leading the head-to-head 1–0, but Jose Francisco Altur had been the form player, winning 4 of their last 7 on clay. Jose Francisco Altur claimed a first win over Marcelo Filippini in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1990-08-20 | San Marino | R16 | clay | Marcelo Filippini | 6-2 7-5 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.