Mexico City, MX   ---  (L-R) Undefeated WBO World Welterweight  champion Timothy Bradley and four-division champion Juan Manuel Marquez pose during the press conference at the TV Azteca Studios in Mexico City to announce their upcoming Saturday,Oct 12  world championship fight at the Thomas & Mack Center in Las Vegas,Nevada. Promoted by Top Rank®, in association with Zanfer Promotions, Wynn Las Vegas, Márquez Boxing, and Tecate, Bradley vs. Márquez  will be produced and distributed live by HBO Pay-Per-View®.  Tickets to Bradley vs. Márquez go on sale This Friday! June 21.  --- Photos by Chris Farina/Top Rank.