Serena Williams wins WTA Tour Player of the Year award
The American struggled at the start of the year and went out of the Australian Open in the fourth round.
Williams previously won the WTA award in 2002, 2008 and 2009.
William, 31, ended her year by winning the WTA Tour Championships in Istanbul, beating Maria Sharapova 6-4 6-3 in the final.
She finished the season third in the world rankings behind Victoria Azarenka and Sharapova, but could regain the world number one ranking for the first time since October 2010 if she wins the Australian Open in January.
Williams is one of only three players to win the award more than twice in its 36-year history, alongside eight-time winner Steffi Graf and seven-time winner Martina Navratilova.