The former world number one Amelie Mauresmo's U.S. Open hopes have ended in a clutch of double-faults and a 6-3 6-0 hammering by Flavia Pennetta in the fourth round in New York.
The 29-year-old Frenchwoman doubled faulted 14 times and made 40 unforced errors to help the Italian 16th seed reach her first grand slam quarter-final, where she'll play the Russian sixth seed Dinara Safina.
After an injury-hit year, Mauresmo had recently shown signs of the form that took her to the top of the rankings two years ago but her serve was appalling from the start.
