Former Wimbledon finalist Agnieszka Radwanska has announced her retirement from professional tennis.
The 29-year-old from Poland, once ranked number two in the world, says she is quitting for the sake of her health and fitness.
In a statement on the WTA website, she said: "I'd like to share with you one of the most important decisions of my life. Today, after 13 years of playing tennis competitively, I have decided to end my career.
"This was not an easy decision. I am grateful to have so many special memories, including 20 WTA titles, the WTA Championships in Singapore, a Wimbledon final, and so many others.
I have to concede that I'm not able to push my body to the limits required
"Unfortunately I am no longer able to train and play the way I used to, and recently my body can't live up to my expectations.
"Taking into consideration my health and the heavy burdens of professional tennis, I have to concede that I'm not able to push my body to the limits required."
Radwanska reached the Wimbledon final in 2012 - her only final appearance in a grand slam decider - where she was beaten in three sets by Serena Williams.
She also reached the semi-finals of the Australian Open twice and was a quarter-finalist at the French Open.