San Antonio, Texas --- "THE HEAT IS ON" --- (L-R) Superstar three-time world champion Nonito "The Filipino Flash" Donaire and former world champion Wilfredo Vazquez,Jr. have an intense heated exchange during the posedown at the press conference at the Alamodome in San Antonio,Texas, Thursday for their upcoming world title fight, Saturday,Feb. 4, televised live on HBO World Championship Boxing from the Alamodome in San Antonio,Texas. Promoted by Top Rank, in association with Zanfer Promotions, All Star Boxing and Tecate, Donaire battles Vazquez Jr. in this double-header blockbuster event and undefeated WBC World Middleweight Champion Julio Cesar Chavez Jr. defends his title against Marco Antonio Rubio in the other main event. --- Photos by Chris Farina/Top Rank.