Top seed Caroline Wozniacki has beaten three-time grand slam champion Maria Sharapova to reach the quarter-finals of the US tennis Open in New York.
The Dane won 6-3 6-4 to set up a clash with Dominika Cibulkova of Slovakia for a place in the semi-finals.
Sharapova, who won the 2006 title at Flushing Meadows, hurt herself with nine double-faults and a total of 36 unforced errors - 26 more than Wozniacki.
Earlier, Cibulkova eliminated 2004 US Open champion Svetlana Kuznetsova.