[Photos via Getty Images]. The French Open began in Paris on Sunday despite some very rainy weather conditions. Known as the most challenging grand slam, this two week tournament shall showcase the fiercest rivalries in the game. In fabulous coincidence, the head to head also includes some major foxes. Recently wed Anna Wintour bff, Roger Federer will hit the clay to overcome previous losses in the City of Lights, while this month's Vogue photo subject Rafael Nadal will do everything he can to again take the title.