MIAMI: Novak Djokovic downed Tomas Berdych 6-3, 6-2 for the men's last eight while Svetlana Kuznetsova became the first woman to make the semifinal at the Miami Tennis Tournament.
Also making the men's quarterfinal are No. 4 Andy Murray, No. 5 Andy Roddick, No. 6 Juan Martin del Potro and No. 8 Fernando Verdasco.
10th seed Jo-Wilfried Tsonga won 6-7 (4), 6-3 and 6-2 against fellown Frenchman and No. 7 Gilles Simon, the highest-seeded man to be eliminated.
In the first women's quarterfinal, No. 8-seeded Kuznetsova beat 18-year-old Caroline Wozniacki 6-4, 6-7 (5) and 6-1.
Down at 6-4, 5-2, Wozniacki saved three match points for 5-5, but the Dane lost all momentum at the start of the third set.
Third-seeded Djokovic will face Tsonga in the quarterfinal. He won his first match against Tsonga in the 2008 Australian Open final, but since then Tsonga has won all four of their meetings.
Murray beat unseeded Viktor Troicki of Serbia 6-1, 6-0, and Verdasco was a 6-2, 6-2 winner over Radek Stepanek of the Czech Republic.
Roddick won 22 points at the net in beating No. 9 Gael Monfils 7-6 (2), 6-4, and will meet the winner of the Roger Federer-Taylor Dent match.