Anna Wintour‘s admiration for Roger Federer hasn’t abated since “The September Issue” was filmed. The Vogue editrix gushes over the tennis ace to photographer Mario Testino in the documentary. On Wednesday night, she sat in Federer’s box with her boyfriend, Shelby Bryan, and applauded heartily as the Swiss ace won in straight sets. She was gone before Serena Williams took the court. Although mostly overlooked, Jeremy Piven was the biggest celebrity in the stands. The day before, Eliot Spitzer, who was an ace on the Horace Mann team 40 years ago, also went largely unnoticed.