Juan Antonio Marin defeated Paul Haarhuis 6-2 7-6 in the Umag quarter-final on clay. The upset overturned the form book — Paul Haarhuis came in leading the head-to-head 1–0, defending last year's quarter-final. Juan Antonio Marin claimed a first win over Paul Haarhuis in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1997-07-21 | Umag | R32 | clay | Paul Haarhuis | 6-4 7-6(4) |
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 (169 vs 59). ATP, WTA & Challenger.