Petra Kvitova, who won the Madrid Open title, said she needed to rest mentally the month of March, when she didn’t play any tournaments, but that it was difficult to do and it took some time to rediscover her game.

“The time off wasn't really nice,” said the two-time champion, who upset Serena Williams in semifinals. “I'm just glad to be back and play good tennis. If I look back in this week or the week before when I play Stuttgart, it was terrible. The first match [at Madrid] and the second which I won in three-setters was really tough and big fight from myself. So that was important, to get the first and second win. Then I felt a little bit better and a little bit more comfortable on the court.”