Poland’s Agnieszka Radwanska decided to end her 13 year-long career due to health reasons.
The former world number two was the first Polish player to reach a Grand Slam singles final in the Open Era, when she finished runner-up to Serena Williams at Wimbledon in 2012.
The 29-year-old, who finished with 20 WTA titles, was one of the most consistent players on tour, finishing in top 10 rankings for six straight seasons between 2011-2016.
In an interview with Sports OweFakty, Roger Federer commented on Radwanska's retirement.
“When I saw that message I checked once, twice, and then it was true. Agnieszka is relatively young, but I know that she had a lot of health issues and it strongly influenced her game. It's a courageous decision and you need to respect it,” said the 37-year-old Swiss.
“Agnieszka perfectly understood her opponents' desires, she was able to play in an amazing way. I think we have similar game styles, sometimes her tennis remembered me the one I played on court myself.”