Hernan Gumy defeated Alex Calatrava 6-4 6-1 in the San Marino round of 32 on clay. The upset overturned the form book — Alex Calatrava came in leading the head-to-head 2–1, defending last year's round of 32, but Hernan Gumy had been the form player, winning 3 of their last 7 on clay. Hernan Gumy narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2000-09-11 | Bucharest | R32 | clay | Alex Calatrava | 6-3 6-1 |
| 1999-09-13 | Mallorca | R32 | grass | Hernan Gumy | 7-6(15) 4-6 7-5 |
| 1998-04-20 | Orlando | R16 | clay | Alex Calatrava | 4-6 7-6(5) RET |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (60 vs 140). ATP, WTA & Challenger.