 Castillo dismantled the unbeaten Purlette, knocking him out in five rounds.The momentum from the win over Purlette was lost when Castillo dropped a hard-fought 12 round decision to Charles Shufford in October 2002, but eight months later, fighting at his lightest weight since 1997, Castillo bounced back like a champion, knocking out former US Olympian Lawrence Clay-Bey in nine rounds to win the NABF championship.Castillo's next fight was dubbed