Prior to the fight, Conceicao was considered a minor underdog after a controversial loss to WBC champion Oscar Valdez, but outboxed and outplayed Martinez 99-91, 100-90, 98-92.
Also tonight, undefeated welterweight Giovanni Cabrera (19-0, 7 KOs) returned after a 27-month hiatus to win an eight-round unanimous decision over Rene Telles Giron (16-2, 10 KOs). Judging scores: 77-75, 78-74, 78-74.
American Olympian welterweight Tiger Johnson (2-0, 1 KOs) defeated Xavier Madrid (3-1, 1 KOs) by unanimous decision. Judging score: three times 40-36.
Undefeated heavyweight Stefan "Big Shot" Shaw (16-0, 12 KOs) stopped Joey "Tank" Dawejko