2012 — Serena Williams beats Maria Sharapova 6-4, 6-3 to win the WTA Championships for the third time and finish the year with another title. Williams ends the year with a 59-4 record. Since her first-round loss at the French Open, she is 31-1, winning Wimbledon, the Olympic gold medal and the U.S. Open.
Serena Williams of the U.S., left, holds her trophy after her tennis victory against Maria Sharapova of Russia, right, on the final of the WTA Championships in Istanbul, Turkey, Sunday, Oct. 28, 2012. (AP Photo)