Still injured world No.1 Serena Williams suffered a 6-4 3-6 6-1 first-round defeat to Klara Zakopalova of the Czech Republic, ranked 95th, at the Andalucia Tennis Championships in Marbella, Spain.
The top seed lost her opening clay-court match this year, clearly not recovered from a thigh problem that affected her performance at the Sony Ericsson Open last week, where she lost to Victoria Azarenka in the final.
"I was trying to play my best tennis but the injury prevented me from reaching my top level," said Williams, who wore heavy strapping on her left thigh.
The 26-year-old Zakopalova broke Williams as much as seven times in their encounter at the Andalucia Tennis Championships, while before Zakopalova had never won a set against the American. (source: Reuters India, photos: Ralf Reinecke)