The 2015 Citi Open, held at the William H.G. FitzGerald Tennis Center at Rock Creek Park from Aug. 3 to Aug. 9, enjoyed glorious weather and offered up enjoyable and memorable matches. It was the 47th edition for the men’s competitions and the fifth edition for the women’s competitions, with Kei Nishikori (Japan) and Sloane Stephens (U.S.A.), winning respectively.