Atlantic City is losing its biggest heavyweight fight of the year.

The Eddie Chambers-Tony Thompson IBF elimination bout scheduled for Oct. 28 at Bally's Atlantic City has been canceled due to a back injury suffered by Chambers.

"It's always disappointing when you have a fight with a lot on the line and one of the fighters gets hurt," promoter Dan Goossen told on Wednesday. "There's nothing you can do about it. It's one of the breaks of the game."

Goossen should know. Chambers-Thompson was supposed to be a lead-in to the Carl Froch-Andre Ward super-middleweight unification fight at Boardwalk Hall on Oct. 29. That fight was rescheduled for Dec. 17 after Ward - also promoted by Goossen - suffered a cut while sparring.

Chambers (36-2, 18 KOs) told that he was experiencing tightness in his back while training in his hometown of Philadelphia and the pain eventually became unbearable.

"In camp, my back was tight," Chambers said. "I would do some rounds and then I couldn't move. I was going to tough it out, but I just couldn't perform. My back was tightening up when I was just walking around.

"I just don't want to get in there with a guy like Tony and half-ass it. You're asking for either a bad performance or a loss, and I don't want either of those. It's unfortunate. I worked really hard, but I'm injured."

Thompson (36-2, 24 KOs) and Chambers were scheduled to fight for a shot at IBF heavyweight champion Wladimir Klitschko, who has already knocked out both fighters. There is no word on when or if the bout would be rescheduled.

Without that bout, Showtime will broadcast a double-header featuring super-middleweight prospect Brandon Gonzalez (14-0, 10 KOs) against Ossie Duran (26-8-2, 9 KOs) and junior-middleweight Javier Molina (9-0, 4 KOs) against Artemio Reyes (13-1, 11 KOs).

PUNCHLINES: A pair of Atlantic City Police Athletic League fighters earned titles earlier this month at the National PAL tournament in Toledo, Ohio.

Dallas Holden earned the gold medal in the 110-pound male senior division by walkover. Jajuan Bright took first in the 125-pound male intermediate class by earning decisions over Zakery Collins, of Zanesville, Ohio, and Eric Johnson, of Cleveland.