Serena Williams could face a heavy fine for her ugly outburst during her US Open final defeat to Samantha Stosur on Sunday.
Williams was handed a code violation by umpire Eva Asderaki after the first game of the second set when she had been docked a point for "intentional hindrance" when she screamed 'C'mon' before Stosur had a chance to put her racquet on the ball.
The American then carried on a war of words with the official.
"Serena Williams was issued a code violation for verbal abuse by Chair Umpire Eva Asderaki at the conclusion of the first game of the second set during the US Open women's singles final vs. Samantha Stosur," said a tournament statement.
"Tournament Referee Brian Earley is presently reviewing this incident on tape and also will have further discussions with the chair umpire to determine whether this code violation will result in a fine, and, if so, the level of that fine."
"The decision regarding this matter will be issued tomorrow. Any impact this code violation might have on Serena Williams' Grand Slam probation would require the incident being ruled a major event. That determination will be made by the Grand Slam Committee Director."
Williams was fined $82,500 for her outburst during her loss to Kim Clijsters in the semi-finals here in 2009 and placed on a two-year Grand Slam probation.
Her fine could be increased $175,000.