In the US Open, World number one and defending champion Novak Djokovic has been beaten by third seed Stanislas Wawrinka in the summit clash. In the final, Swiss Stanislas defeated Serbian Djokovic 6-7, 6-4, 7-5, 6-3 to lift the men's singles title. This is his maiden US Open title and his third major title.Yesterday, newly-crowned world number one Angelique Kerber of Germany beat Karolina Pliskova of Czech Republic to lift the Women's Singles title. In the summit clash played, Kerber trumped Pliskova in a three set match to win her maiden US Open title.