Marcelo Rios defeated Hernan Gumy 6-4 6-3 in the Boston quarter-final on hard. The result followed the form book — Marcelo Rios came in leading the head-to-head 5–1. Marcelo Rios extended the head-to-head to 6–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2000-04-07 | Davis Cup G1 SF: CHI vs ARG | RR | clay | Marcelo Rios | 6-4 6-3 4-6 6-1 |
| 1999-07-19 | Stuttgart Outdoor | R32 | clay | Marcelo Rios | 6-7 7-6 6-0 |
| 1998-04-03 | Davis Cup G1 SF: ARG vs CHI | RR | clay | Marcelo Rios | 6-4 3-6 6-3 7-5 |
| 1997-04-04 | Davis Cup G1 SF: CHI vs ARG | RR | clay | Marcelo Rios | 6-4 7-5 6-4 |
| 1996-11-04 | Santiago | F | clay | Hernan Gumy | 6-4 7-5 |
| 1995-10-23 | Santiago | SF | clay | Marcelo Rios | 3-6 6-4 6-2 |
Averages over each player's completed matches in the selected window (200 vs 122). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About