Serena seals year-end world No. 1
Serena Williams will end the year as the world No. 1 for the third time in her career.
The American has only lost four times in 2013 and clinched 67 match wins, as well as winning the French and US Opens and taking a total of nine titles.
Williams returned to the top of the rankings in February after trumping Victoria Azarenka and becoming the oldest player to be world No. 1 at the age of 31.
Now 32, Williams also received the largest pay-out in the women's game after winning the US Open, taking a total of $3.6 million.
"Serena has proven time and time again throughout her career that she is an incredible champion, both on and off the court," WTA chairman & CEO Stacey Allaster said. "This season she continues to rewrite the record books, proving she is one of the sport's greatest athletes of all."
Williams is the seventh player to end the campaign on top three times or more, joining Steffi Graf, Martina Navratilova, Chris Evert, Lindsay Davenport, Justine Henin and Martina Hingis.
There was not such good news for older sister Venus as her great run at the Pan Pacific Open was ended by Petra Kvitova.
Venus, who knocked out world No. 2 Azarenka en route to the semi-finals, was beaten 3-6 6-3 7-6(2) by the former Wimbledon champion. In the final, Kvitova will take on Angelique Kerber after the German edged out Caroline Wozniacki 6-4 7-6(2).
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