camacho retired after the loss to gonzalez, but then returned on march 4, 1999, defeating miguel del valle by eight-round decision. this turned out to be camacho's last career victory, and he subsequently lost to leo gamez by an eight-round knockout at roberto clemente coliseum in san juan, may 29, 1999, for the wba's interim super-flyweight title, then to gerson guerrero by a first-round knockout at fantasy springs casino in indio, california, for the vacant north american boxing federation's flyweight title on may 19, 2001, and to miguel del valle in a rematch, may 25, 2002, at the acropolis in manati, puerto rico, by a twelve-round unanimous decision for the wbc's cabofe flyweight championship.