Periods are "one more tough thing" for women tennis players to deal with, says defending Wimbledon ladies' champion Petra Kvitova.
The Czech star, ranked number 2 in the world, was asked whether "girl things" ever affected her game at a press conference ahead of this year's Wimbledon tournament.
To giggles from the predominantly male press, an unfazed Kvitova replied "I think that for normal women, they know about [the issue]," the Huffington Post UK reported.
"If we have to play the match or training or something, it's difficult."
"It's never really easy to deal with one more tough thing. I think always the beginning of this kind of period, it's tough."