tennis No – tennis player appeared in the inaugural issue of US magazine . The American admits ' You 're a target when you 're number one ' Williams is pleased to have tennis rival Caroline Wozniacki as a friend .
World No 1 Serena Williams appears in the April issue of US Vogue . The American admits 'You 're a target when you 're number one ' Williams is pleased to have tennis rival Caroline Wozniacki as a friend .