According to law enforcement sources, Cromartie was out celebrating the Chargers win at a local San Diego bar when somebody threw a champagne bottle which hit a bystander in the head.

Witnesses claim there was champagne being sprayed back and forth between Cromartie’s party and other bar patrons — until the mood changed and someone threw a bottle.

We’re told the bystander had a cut on his head — but no ambulance was called to the scene.

Law enforcement sources tell us 25-year-old Cromartie was identified as the bottle-thrower by at least one person — but there are conflicting stories from other witnesses.

Cromartie’s agent, Gary Wichard, says that his client did nothing wrong.

“This is absolutely not a story.  Antonio didn’t throw the bottle.  He was there with 2 other players… no one was involved in the fight.”

Obviously I have no idea if Cromartie had anything to do with throwing the bottle.  But I know that anytime the team you are about to play has to deal with off the field issues, it only helps matters on Sunday, especially when it’s a marquee player.

The Chiefs were lucky not to have to deal with Troy Polamalu this past Sunday and it would be a huge advantage if Cromartie’s head wasn’t completely in the game.