"My body could not take any more training, especially my shoulder. I had to train more than others (because of her unorthodox way of playing). There was a stage during that Wimbledon championship when I could not even brush my teeth because of the sore shoulder," she said here today.
The French tennis star is the event ambassador of the January 18 Standard Chartered Mumbai Marathon.
"I was not in the sport for the money. If you ask me how much I earned I wouldn't be able to tell you. But I can tell you about the matches I had played, the scoreline. That's all mattered to me," the former tennis professional said at a media conference called by marathon organisers.
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"When she is fit and plays she is the best player in the world. But I cannot say how her body would hold up, how injury-free she will be," said Bartoli, who is now into fashion designing.
Serena of US has 18 titles to her credit till date.
Bartoli, who idolised NBA legend Michael Jordan as a teenager, ruled out coaching as a vocation and said she was pretty happy with what she has been doing since retiring.
Asked about new formats in tennis like Champions League, Bartoli said they can never measure up to the excitement of the traditional game in which at times players slug it out for five to six hours with fluctuating fortunes keeping the viewers engrossed.