Petra Kvitova, who is playing the Bank of the West at Stanford this week, says she may have pushed herself a bit too far as she began her return to tour.
Last December, the Czech experienced a knife attack in her home, requiring extensive surgery to repair damage to her left hand.
She returned to tennis in May at the French Open and won her opening round, before entering the grass-court season and winning in Birmingham, beating Kristina Mladenovic and Lucie Safarova.
But at Wimbledon, the two-time champion fell in only the second round to Madison Brengle.
"I was really trying hard to play Wimbledon and suddenly I was there and I wasn't feeling the best," Kvitova said. “Everything together, physically, emotionally, mentally, it was just too much. The body just responded. I'm glad that it's over, this part, and now I just enjoy the rest of the season.”
She recently added Stanford to her schedule, requesting a wild card into the tournament.
"I wanted to play some more matches," she said. "I didn't stay too long at Wimbledon, so that's why I asked for the wild card, so it's very nice that I got it."
Kvitova is planning to play five tournaments in a row in Canada and America for the remaining summer hard-court season.
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