Tennis ace Serena Williams has been fined $2,000 for verbally lashing out against an umpire at the U.S. Open during her match on Sunday.

Williams shouted at presiding referee Eva Asderaki after what she thought was a poor call, and, in the midst of passion, she blasted the official as a "hater", who was "unattractive inside"; and saying, "I truly despise you."

The remarks were captured on camera and went viral, prompting bosses at the Tournament Grand Slam Committee to launch an investigation into the incident and review the star's behavior.

And on Monday, Williams, who earned a grand total of $1.4 million during the tournament, was slapped on the wrist with a small fine.

A spokesperson for the U.S. Tennis Association says, "Williams' conduct... does not rise to the level of a major offense."

Williams went on to lose the finals match against her opponent Samantha Stosur in straight sets 6/2, 6/3.

During her tirade Williams mistook Asderaki for the referee in her 2009 semi-final match against Kim Clijsters; asking her, "Aren't you the one that screwed me over last time here... you have it out for me and I promise you - that's not cool."

Williams was fined $82,500 for that tirade along with slamming her racket during the 2009 semi-final against Clijsters, which she lost.

During that match she told an official, "I swear to God I feel like taking this f**king ball and shove it down your f**king throat... I swear to God."

(Note: if the above video gets pulled or doesn't work, check out ABC's report from Good Morning America, via YouTube.)