MIAMI (Reuters) - World number one Serena Williams has pulled out of next week's Sony Ericsson Open due to a knee injury, organizers said on Friday. The American's withdrawal is another blow to the tournament after former Wimbledon champion Maria Sharapova and world number two Dinara Safina had already pulled out. Williams has won the Key Biscayne event five ...

Andy Roddick defeated Thiemo de Bakker of the Netherlands 6-3, 6-4 on Tuesday to reach the fourth round of the BNP Paribas Open along with Andy Murray, while second-seeded Caroline Wozniacki advanced to the women's quarterfinals. Roddick, a semifinalist here last year, improved his record to ...

Justine Henin's comeback hit its first speed bump as Gisela Dulko ousted the former world number one from the second round of the Indian Wells hardcourt tennis tournament. Henin had made stunning run to the final of the Australian Open in January - in just her second tournament since a return from an 18-month retirement. But Dulko's 6-2, 1-6 ...