Andrea Gaudenzi defeated Marcelo Rios 5-7 6-1 6-4 in the St. Poelten round of 32 on clay. The upset overturned the form book — Marcelo Rios came in leading the head-to-head 3–0. Andrea Gaudenzi claimed a first win over Marcelo Rios in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-05-18 | St. Poelten | SF | clay | Marcelo Rios | 6-4 6-3 |
| 1997-05-19 | St. Poelten | R32 | clay | Marcelo Rios | 6-4 4-6 6-4 |
| 1997-04-21 | Monte Carlo Masters | R32 | clay | Marcelo Rios | 6-2 6-2 |
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 (81 vs 115). ATP, WTA & Challenger.