Claim: Mickey Cantwell remained undefeated professionally until his March 1996 flyweight bout with Keith Knox.
Evidence: Cantwell turned professional in 1991 and, unbeaten in his first seven fights, beat Darren Fifield in April 1993 to take the vacant BBBofC Southern Area flyweight title. Five months later he challenged for Pablo Tiznado's WBC International light flyweight title, losing on points - his first professional defeat.