[2] In 1991, Rivera reached the quarter-finals of the Banespa Open in São Paulo with wins over Martín Jaite and Jean-Philippe Fleurian.

[2] His only other Grand Slam appearance was in the US Open in 1992, where he lost a four set match in the first round to American Scott Davis.

[2] He also qualified for the 1992 German Open (an ATP Super 9 event) and made the second round, after defeating Spaniard José Francisco Altur.

[2] As a doubles player he had his best win on tour when he and partner Sergio Cortés defeated third seeds Tomás Carbonell and Byron Talbot at the 1993 Movistar Open.

Rivera took on Roger Smith in the opening match and Mark Knowles in the final and deciding rubber, losing both.