THE ASSOCIATED PRESS
KEY BISCAYNE, Fla. — Caroline Wozniacki has become the latest upset winner at the Sony Ericsson Open.
The 18-year-old Dane beat No. 4-seeded Elena Dementieva 7-5, 6-4 on Monday to reach the quarter-finals. Dementieva was the sixth top-10 player eliminated.
Wozniacki last week was selected WTA Tour newcomer of the year for 2008. She took advantage of 45 unforced errors by Dementieva.
No. 8 Svetlana Kuznetsova avoided the wave of upsets by beating Alisa Kleybanova 6-2, 6-1.
Five-time champion Serena Williams and three-time champion Venus Williams also had fourth-round matches scheduled Monday. They’re the only players seeded in the top seven left in the women’s draw.