Tennis: Top-ranked Serena out of Doha with back injury
ST. PETERSBURG, United States, (AFP) - World number one Serena Williams has withdrawn from next week's US$2.4 million (S$3.04 million) Qatar Open because of a back injury, the WTA Tour announced on Friday.
Williams, who lost to Victoria Azarenka in last year's Qatar Open final, suffered the injury at the Australian Open last month.
Serbian Ana Ivanovic upset Williams in the fourth round in Melbourne.
Williams, who won her opening tournament of the year at Brisbane by beating Azarenka in the final, is the reigning US and French Open champion.