Two-time Wimbledon champion Petra Kvitova loses to Britain's Jodie Burrage on her return from maternity leave at the ATX Open.

She has won 31 titles, made history at Wimbledon and earned more than $37 million. Now, Petra Kvitova returns to the tour not to prove anything, but because she still loves the game.

Twice Wimbledon champion Petra Kvitova said she has been encouraged by the success of several new mothers on their return to the WTA Tour but the Czech is tempering expectations ahead of her own comeback from maternity leave this week.