Juan Antonio Marin defeated Markus Hipfl 6-3 6-4 in the St. Poelten quarter-final on clay. The upset overturned the form book — Markus Hipfl came in leading the head-to-head 1–0, defending last year's quarter-final. Juan Antonio Marin claimed a first win over Markus Hipfl in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-05-17 | St. Poelten | R32 | clay | Markus Hipfl | 6-1 6-1 |
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 (82 vs 89). ATP, WTA & Challenger.