Andrei Cherkasov defeated Carlos Costa 6-3 7-5 in the Prague quarter-final on clay. The upset overturned the form book — Carlos Costa came in leading the head-to-head 3–0. Andrei Cherkasov claimed a first win over Carlos Costa in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1994-04-04 | Barcelona | R32 | clay | Carlos Costa | 6-4 6-4 |
| 1994-03-28 | Estoril | R32 | clay | Carlos Costa | 6-3 6-2 |
| 1990-04-09 | Barcelona | R32 | clay | Carlos Costa | 6-3 6-2 |
Averages over each player's completed matches in the selected window (31 vs 99). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About