The Facts: Following up on a previous item. ... Marshall allegedly slugged a woman at a Chelsea nightclub, the Post has learned.

Diehards Line:Marshall was at a New York City club Sunday when he got into an argument with a group of friends celebrating a birthday, law-enforcement sources told the Post. Around 4 a.m., Christin Myles, 24. left an upper floor to greet a friend downstairs. When Myles tried to get back upstairs, a bouncer told her she had to wait because there was a fight between two football players - Marshall, 27, and an unknown athlete - who were being thrown out of the club, the sources said. She later met up with her friends, who were arguing with the NFL bad boy and the other football player outside. Marshall then allegedly cold-cocked Myles in the left eye. She suffered a black eye. It wasn't clear if he allegedly intended to strike her or one of her pals. Myles filed a police report. A lawyer for Marshall -- who was traded by the Dolphins to the Chicago Bears -- told the Post that the fight did not involve Marshall or his friends and claiming that Marshall's wife was hit in the face with a bottle, suffering a serious injury. But police said the only report filed about that night names Marshall as a perpetrator. Sources tell the Post the Bears weren't aware of the incident but South Florida Sun-Sentinel staffer Omar Kelly says both teams knew. ... Stay tuned.