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Stanislas Wawrinka of Switzerland plays agaisnt Novac Djokovic of Seribia during the final match of the French Open tennis at Roand Garros in Paris on June 7, 2015. The 30-year-old Swiss defeated the world No. 1 Serbian with 4-6, 6-4, 6-3, 6-4 to claim his first French title and second Grand Slam title. ( The Yomiuri Shimbun via AP Images ) (KEYSTONE/AP Yomiuri Shimbun/Reiri Kurihara)