View Photo Gallery: On Manic Monday at Wimbledon, Serena Williams faced Yaroslava Shvedova.

On Manic Monday at Wimbledon, there was a spot of bother for Serena Williams, Maria Sharapova and the defending champion, Petra Kvitova.

Williams and Kvitova found their way out of trouble; Sharapova, the No. 1 player in the world, did not.

All 32 remaining players were trying to squeeze matches in around rain delays and Williams was able to complete hers, beating Yaroslava Shvedova, a wild card from Kazakhstan, 6-1, 2-6, 7-5, to advance to the quarterfinals. Play on other courts had been halted, but Williams and Shvedova continued, with Scottie Pippen watching from the friends’ and family box.

“I felt fine out there. I think we both wanted to keep playing because it was so deep into the match. I felt like I didn’t want to stop,” Williams said in an ESPN interview. “I don’t know if she wanted to stop, but I was definitely ready.”

Sabine Lisicki was a straight-sets winner. (Sang Tan / AP)

Sharapova, the French Open champion, was bounced from the tournament by Sabine Lisicki, who won 6-4, 6-3. Kvitova dropped her first set to Francesca Schiavone, 4-6, but won the next two, 7-5 and 6-1.

On the men’s side, Roger Federer was in a more worrisome predicament. The six-time champion, who was walking rather gingerly and bending stiffly, left the court during his match with Xavier Malisse to receive treatment on his lower back in the trainer’s room. Federer returned to win, 7-6 (7-1), 6-1, 4-6, 6-3, and dismissed his back problems.

“It’s okay, otherwise I wouldn’t be giving this interview,” he said. “It started to feel better as the match went on. I thought I was in big troubled.”

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