Roberto Garcia was a decent super featherweight (130 lbs) who was among the best at his weight at the time.
When Garcia retired, he took that experience and applied to training some of boxing's most magnificent boxers of the last decade.
Garcia currently trains his brother and junior welterweight (140 lbs) contender Mikey Garcia (27-0, 23 KO) as well as current WBA lightweight (135 lbs) world champion Brandon Rios (28-0-1, 21 KO).
Garcia also used to train Victor Ortiz (29-3-2, 22 KO) until right before Ortiz lost to Marcos Maidana (31-2, 28 KO). Under Robert Garcia, Ortiz only lost once by disqualification.
Robert Garcia also took Antonio Margarito (38-7, 27 KO) on when he came back from his year-long suspension for illegal handwraps. Margarito has only lost once to Manny Pacquiao since coming back.
Possibly Garcia's most successful pupil so far is Nonito Donaire (27-1, 18 KO). The 29-year-old Filipino American has already won world titles in three weight classes and plans to win another in 2012 at super bantamweight (122 lbs).
With Garcia's guidance, Donaire as well as Rios will continue to dominate and create plenty of success.