Younes El Aynaoui defeated Marcelo Rios 7-6 7-6 in the Gstaad round of 16 on clay. The upset overturned the form book — Marcelo Rios came in leading the head-to-head 2–0, defending last year's semi-final, but Younes El Aynaoui had been the form player, winning 2 of their last 4 on clay. Younes El Aynaoui claimed a first win over Marcelo Rios in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2002-04-15 | Monte Carlo Masters | R32 | clay | Marcelo Rios | 1-6 6-3 6-4 |
| 1999-05-17 | St. Poelten | SF | clay | Marcelo Rios | 6-1 6-3 |
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 (200 vs 200). ATP, WTA & Challenger.