The San Antonio Spurs star filed the lawsuit Thursday in NY State Supreme Court … against W.i.P. Nightclub — and in the suit he alleges the club’s security was negligent for allowing the brawl to ever happen. 

Parker says he was hit by shards of glass and suffered lacerations to his cornea when bottles started flying in the fight last week. The lawsuit was first reported by the New York Post.

The owner of the club tells TMZ he has not been served with papers yet.

Parker’s injury is a huge deal because it could affect his NBA career, and — more immediately — his performance in the Olympics with the French national basketball. 

As for why he would sue for $20 MILLION? Parker is in the middle of a $50 million contract with the Spurs.