US player Serena Williams kneels on the court after a game against Germany's Sabine Lisicki during their fourth round women's singles match on day seven of the 2013 Wimbledon Championships tennis tournament at the All England Club in Wimbledon, southwest London, on July 1, 2013. AFP PHOTO / CARL COURT - RESTRICTED TO EDITORIAL USE (Photo credit should read CARL COURT/AFP/Getty Images)
LONDON - Defending champion Serena Williams lost in the fourth round of Wimbledon on Monday, failing to close out a see-saw third set and falling 6-2, 1-6, 6-4 to Sabine Lisicki of Germany.
The loss, another major upset at Wimbeldon, ended Williams' career-best 34-match winning streak and her attempt to capture a sixth title at the All England Club.
Williams was up a break twice in the third set but Lisicki fought back both times and broke again to go ahead. She converted her second match point with a forehand winner.
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