Las Vegas, NV ---  "Viva Chavez" ---  WBC Middleweight Champion Julio Cesar Chavez Jr. works out in Las Vegas for his upcoming WBC World Middleweight Championship against top middleweight contender Andy Lee of Limerick,Ireland, Saturday,June 16 at the Sun Bowl Stadium in El Paso,Texas.  Promoted by Top Rank, in association with Zanfer Promotions, DiBella Entertainment, At&T and Tecate, this championship card will be televised live on HBO Championship Boxing. Photos by Chris Cozzone/Top Rank.