Anna Wintour's Absence a Bad Luck Charm for Federer 3.06K Andrew Belonsky 09/15/09 02:14AM Filed to: Gawker Sports Gawker Sports Anna Wintour Roger Federer U.S. Open Juan Martin del Potro Vogue Gettypic We now know the secret of Roger Federer's success: Anna Wintour! The Vogue editrix has been entirely devoted during the entire U.S. Open, but left during his final set against Juan Martin del Potro yesterday. And then he lost. She-devil!