Machado represented Puerto Rico at the 2008 AIBA Youth World Boxing Championships.
[citation needed] Machado won his first 8 fights before competing for the USNBC super featherweight title against fellow Puerto Rican prospect Alvin Torres.
Machado's second title would be the NABO super featherweight, for which he defeated Juan José Martínez by TKO in just one round.
Machado unified North American titles against NABA super featherweight titlist, Carlos Morales.
[4] Corrales lost his title on the scales, coming in at 134 lb, 4 above the division's weight limit.