Serena Williams’ behavior in Saturday’s U.S. Open final divided the tennis world. Williams called the chair umpire a “liar” and a “thief” and said he treated her differently than male players during her loss to Naomi Osaka. Williams was seeking a record-equaling 24th Grand Slam singles title on Saturday. She was handed a warning for a coaching violation before being deducted a point for smashing her racquet.

She then had a heated argument with chair umpire Carlos Ramos, which cost her a game.