Tennis player Anna Kournikova was reportedly involved in a brawl in a Las Vegas nightclub on Saturday - after a woman threw a drink over her.

The blonde beauty, who is dating singer Enrique Iglesias, was partying with pals at nightspot Lavo in Sin City when a fellow reveler took offense at the group's behavior.

According to New York Post gossip column PageSix, the woman felt "Anna was invading her space," and reacted by soaking the star in an alcoholic beverage.

The publication claims a fight ensued when Kournikova "sprung into action" and started to push and shout at the woman - before the reveler was kicked out.

A source tells the column, "It was a big fight."

(This news article provided by World Entertainment News Network)