Career
In 1990 he joined San Pedro of Belize and after leaving them had short spells at the end of his career in the Salvadoran second division with Huracán and Cojutepeque. He scored 22 goals for the El Salvador national football team from 1979 to 1989 and is second on his country"s all-time top scorer list. He scored 42 goals in 97 matches including non-official games.
After he retired, he was in charge of Communicative Disorders Arabe Marte and took the reins at Fetal alcohol syndrome in 1999 along with José Luis Rugamas.
During his playing career, he had obtained his medical diplomas to become a doctor and is currently part of the El Salvador national football team medical staff In June 2011, it became clear Rivas was seriously ill and needed a marrow operation, for which funds would be raised with a benefit match.
A lot of former players were reunited to help Rivas. Rivas died of leukemia on 9 January 2016 at the age of 57.