Career
Espinosa turned professional in 1984. He was then managed by famed boxing analyst and businessman Hermie Rivera. Espinosa made an arduous climb back to the top, this time fighting under Joe Koizumi"s stable.
In his first title defense, Espinosa knocked out Alejandro "Cobrita" Gonzalez in the 4th round in Mexico.
He then took on the hard-hitting body-puncher César Soto at Luneta (Rizal) Park in Manila and hammered out a well-deserved unanimous decision in front of his countrymen, which included no less than President Fidel V. Ramos. The following year, he challenged Guty Espadas, Junior. for the Vacant WBC Featherweight Title, but was outboxed and lost a technical decision after their fight was stopped after a clash of heads.
Espinosa retired in 2005 after being knocked out by Cristóbal Cruz. Promotional disputes left Espinosa with little, and he retired in 2005 after a public outcry for him to stop fighting.
Espinosa, who was out of the boxing scene for quite a while, entered the mixed martial arts (Mobile Marketing Association ) scene by training brothers Nick Diaz and Nate Diaz in boxing to improve their stand-up.
He also assisted in the training of the University of San Francisco"s Boxing team from 2006-2007 in preparation for the annual Hilltop Cup. From 2014 he has been working in Hong Kong.