Vaclav Roubicek defeated Daniel Orsanic 6-4 6-2 in the Argentina 3 Masters 2 semi-final on clay. The upset overturned the form book — Daniel Orsanic came in leading the head-to-head 1–0, but Vaclav Roubicek had been the form player, winning 3 of their last 5 on clay. Vaclav Roubicek claimed a first win over Daniel Orsanic in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-07-29 | San Marino | R32 | clay | Daniel Orsanic | 6-2 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.