Three time winner Serena Williams is under investigation by U.S. Tennis Open tournament officials for the outburst she directed at the chair umpire during her loss to Australian Sam Stosur in the final.
Williams was issued with a code violation for verbally abusing the umpire in the second set face further penalties, including a fine and suspension.
The tournament referee is reviewing the incident on tape and wants to speak with thye match umpire to determine whether Williams should be fined.
Williams is currently under probation for her foul-mouthed tirade during her 2009 U.S. Open semi-final loss to eventual champion Kim Clijsters.
She was fined $100,000 and warned the fine would be doubled and she could be suspended from other grand slams if she committed another major offence in the next two years.