SINGAPORE — World number one Serena Williams has opted to pull out of the WTA Finals and end her season early following a roller coaster campaign that has taken its toll on her body, the American said on Thursday.
Williams, 34, has not played since her shock loss to Italy's Roberta Vinci in the semi-finals of the U.S. Open last month, which ended her bid to claim all four grand slam titles in the same season.
The 21-times Grand Slam singles champion said she had been carrying injuries and the loss to Vinci had taken its toll, adding she would not play again this year after also pulling out of next week's China Open.