Serena Williams Sorry About US Open Outburst
Sources extremely close to Serena tell TMZ ... the tennis star feels like she got lost in the heat of the moment -- and simply believes her emotions got the better of her.
Serena was fined $2,000 for the outburst -- but sources tell us, the tennis star is less concerned about the money than she is about getting her game back on track.
Calls to Serena's rep weren't returned. more on this story