Martina Hingis announced that she will retire from tennis after her last match at the WTA Finals in Singapore.
"I feel very lucky to have been given the opportunity to play this wonderful sport for so many years," Hingis wrote in a Facebook post. "Tennis has always been my passion and I am extremely thankful for all the challenges, opportunities, partnerships and friendships it's given me.
Hingis, who has retired and returned to competitive tennis twice before, calls it quits with five grand slams in singles, thirteen in doubles and seven in mixed doubles.
The Switzerland native burst onto the scene in 1997 when she won the Australian Open just three months after her 16th birthday.