Marcelo Rios defeated Gaston Gaudio 6-3 6-2 in the Cincinnati Masters round of 64 on hard. The result followed the form book — Marcelo Rios came in leading the head-to-head 4–0. Marcelo Rios extended the head-to-head to 5–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2003-05-19 | Dusseldorf | RR | clay | Marcelo Rios | 6-3 6-3 |
| 2003-03-10 | Indian Wells Masters | R64 | hard | Marcelo Rios | 4-0 RET |
| 2003-02-10 | Vina del Mar | SF | clay | Marcelo Rios | 6-3 6-2 |
| 2002-10-14 | Madrid Masters | R64 | 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 (68 vs 200). ATP, WTA & Challenger.