Former IBF #1-ranked welterweight Cosme “Chino” Rivera (31-11-2, 23 KOs) has agreed to step in on five days notice to face undefeated WBC #3-ranked super welterweight Alfredo “Perro” Angulo (14-0, 11 KOs) on Don King’s “St. Valentine’s Day Massacre” boxing card on Saturday at BankAtlantic Center in Sunrise, Fla. Former three-time world champion Ricardo “El Matador” Mayorga, from Nicaragua, was to have faced Angulo, but pulled out 10 days before the match. Danny Perez was mentioned as a possible opponent, but that bout was not finalized. The main event showcases unified IBF/WBO/WBA lightweight world champion Nate “Galaxxy Warrior” Campbell (32-5-1, 25 KOs) opposing IBF mandatory challenger Ali Funeka. Also WBC interim super welterweight champion Sergio Martinez (44-1-1, 24 KOs)meets former IBF welterweight champion Kermit “The Killer” Cintron (30-2, 27 KOs). Tickets priced at $200, $75, $40 and $25 (with all seats 2-for-1 excepting a limited number of “golden circle” seats) are on sale now. Call 800-745-3000.