Wimbledon champion Petra Kvitova suffered a speedy exit from the 2011 US Open giving her opponent Alexandra Dulgheru great assistance with 52 unforced errors in their first round match. The second set was especially devastating for the Czech who committed 20 unforced errors to her opponent's only one.
The fifth-seeded Kvitova lost 7-6(3) 6-3 on Dulgheru's first match point and allowed an all-Romanian second round match between the 49th-ranked Dulgheru and 70th-ranked Monica Niculescu.
Kvitova's loss marks the first big upset of the tournament. (photo: © Neal Trousdale)