The 35-year-old has struggled for wins since returning to the tour following the birth of her son last summer.

Petra Kvitová, the two-time Wimbledon champion and former world No. 2, has announced she will retire after this year’s U.S. Open. Kvitová, 35, won the Billie Jean King Cup six times with the Czech ...

Kvitova, who won her two major titles at Wimbledon in 2011 and 2014, will hang up her racquet at the end of the year ...