United Kingdom: Wimbledon - Doubles - Main |
| 1/32-finals | Marrero M./De Los Rios R. | Koulikovskaya E./Talaja S. | 0:2 (3:6, 4:6) | details | 23.06.2003 |
France: French Open - Doubles - Main |
| 1/16-finals | Ruano Pascual V./Suarez P. | Marrero M./De Los Rios R. | 2:0 (6:1, 6:0) | details | 02.06.2003 |
| 1/32-finals | Bedanova D./Vinci R. | Marrero M./De Los Rios R. | 0:0 RET. (3:2) | details | 26.05.2003 |
Spain: Madrid 2 - Doubles - Main |
| 1/8-finals | Cravero J./Suarez P. | Marrero M./De Los Rios R. | 2:1 (3:6, 6:4, 6:4) | details | 20.05.2003 |
Morocco: Casablanca - Doubles - Main |
| Quarter-finals | Serra Zanetti A./Serra Zanetti A. | Marrero M./De Los Rios R. | 2:1 (7:5, 4:6, 6:4) | details | 02.04.2003 |
| 1/8-finals | Marrero M./De Los Rios R. | Bacheva L./Ehritt-Vanc A. | 2:1 (7:5, 2:6, 6:3) | details | 01.04.2003 |
Mexico: Acapulco - Doubles - Main |
| 1/8-finals | Marrero M./De Los Rios R. | Freye K./Roesch A. | 0:2 (2:6, 5:7) | details | 24.02.2003 |
Australia: Australian Open - Doubles - Main |
| 1/32-finals | Salerni M./Svensson A. | Marrero M./De Los Rios R. | 2:0 (6:3, 6:2) | details | 13.01.2003 |
Germany: Berlin - Doubles - Main |
| 1/16-finals | Marrero M./De Los Rios R. | Callens E./Rubin C. | 1:2 (7:6, 5:7, 1:6) | details | 06.05.2002 |