NFL superstar LeSean McCoy reportedly assaulted 2 off-duty police officers in Philadelphia on Sunday -- and the cops were badly injured ... this according to multiple news outlets.
McCoy was at the Recess Lounge around 2:30 AM on Sunday when he got into the altercation ... so says WPVI.
FOX 29 in Philly says the officers involved suffered several serious injuries -- including a fractured skull, broken ribs and a broken nose.
According to the police report, the fight was all over champagne -- with the football player upset that the cops received their bubbly first.
McCoy has NOT been arrested -- but he and another man are at the center of a police investigation.
McCoy played for the Philadelphia Eagles in the past. He's currently a member of the Buffalo Bills.
We reached out to McCoy's agent Drew Rosenhaus -- but he declined to comment.
Story developing ...