Tennis phenom Anna Kournikova got into a fight Saturday night in Las Vegas after an unidentified woman threw a drink at her.

The NY Post’s Page Six Column reports:

“Kournikova and her pals were partying at Lavo after attending the Hardbat Classic table tennis tournament when a woman at the next table “threw a drink at Anna. She felt Anna was invading her space,” our source said. Kournikova “sprung into action” and starting screaming at the woman and shoving her…”