Former welterweight titlist Luis Collazo's Nov. 4 opponent has been named. He will face Artur "Scar" Atadzhanov (10-3, 7 KOs) of Ukraine, according to Don King Productions. The bout -- which will be on the untelevised portion of the Showtime card headlined by heavyweight titlist Liakhovich making his first defense against Briggs -- will be the first for Collazo (26-2, 12 KOs) since he lost his belt on a close decision to Ricky Hatton in May. Also, former junior middleweight titlist Alejandro "Terra" Garcia, who was supposed to be on the card in his first bout since losing his belt in May to Jose Antonio Rivera, has withdrawn from the card.


Welterweight contender Paul "The Punisher" Williams, 25, has a new opponent for his showcase fight on the Nov. 4 Baldomir-Mayweather HBO PPV undercard. Williams (31-0, 23 KOs) will now face 34-year-old trial horse Mauro Lucero (42-11-1, 28 KOs), who has been stopped in eight of his 11 defeats. Few expect the scheduled 10-rounder to go more than a few rounds, and if that is the case, viewers will see the eight-rounder between unbeaten heavyweights Chris Arreola and Damian Wills on tape from earlier in the evening. Williams originally was scheduled to face equally soft Jacy Kuhn, but Kuhn is suspended because he signed a contract to face Julio Cesar Chavez Jr. in September and didn't show up for the bout.

Former junior bantamweight champ Martin Castillo (30-2, 16 KOs), who lost his title to Nobuo Nashiro on July 22 in Japan when he was stopped on cuts in the 10th round, is scheduled for surgery Oct. 27, manager Frank Espinoza told ESPN.com. Castillo, who visited the doctor this week to decide when to have the surgery, has been susceptible to cuts throughout his career. He will have scar tissue removed from over his eyes and have part of the bone shaved down. Espinoza said Castillo should be ready to return to action in March or April


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