Anna Kournikova beat the living crap out of a woman who threw a drink at her at Lavo in Vegas over the weekend.

According to reports, Anna and her friends were being loud an obnoxious at the club after attending a rowdy ping pong tournament. The woman, who was seated at the next table, got annoyed and tossed a drink at the tennis player. Sources say that Anna was so upset that she jumped out of her seat, and began pounding the woman until security threw the woman out. Anna got away with just a few scratches on her neck.