World No.1 Serena Williams has successfully defended her WTA Championships title on Sunday, beating Li Na 2-6, 6-3, 6-0 in Istanbul.
According to Sport24, the 32-year-old world number one from the US had admitted to feeling physically exhausted before, during and after a fraught semi-final with Jelena Jankovic on Saturday and at 3-3 in the second set on Sunday, she looked in danger of a surprise defeat.
Williams said that she had to keep going, hang in there and it was amazing to be able to win this.
Serena finished the year with prize money of 12,385,572 dollars, shattering the all-time women's record set last year by Victoria Azarenka, who won 7,923,920 dollars, the report said.
