SUNRISE, Fla.—Former International Boxing Federation No. 1-ranked welterweight Cosme “Chino†Rivera (31-11-2, 23 KOs) has agreed to step in on five days notice to face undefeated World Boxing Council and World Boxing Organization No. 1-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. http://fightbeat.com/news_details.php?NW=22069