Focused Caroline Wozniacki Back In The Running At US Open

— -- NEW YORK -- With the New York City Marathon just nine weeks away, Caroline Wozniacki got a head start on Sunday. She met Maria Sharapova's corner-to-corner barrage with a combination of relentlessness and nerve, chasing down balls with a speed that could get her considered for a start with the elite women come November.

After three sets, the 10th-seeded Wozniacki ousted fifth-seeded Sharapova 6-4, 2-6, 6-2, advancing to face 13th-seeded Sara Errani in the quarterfinals. On the court, she asked fans to get behind her marathon charity, Team For Kids.