By surface
| Surface | Carlos Rivas | Marillia Matte |
|---|---|---|
| Clay | 2 | 0 |
All meetings (2)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1982-04-05 | WTA | Curitiba | Semifinal | Clay | Patricia Medrado | 2-6 | 1-6 | |||
| 1980-03-17 | WTA | Porto Alegre | Quarterfinal | Clay | Patricia Medrado | 4-6 | 4-6 |