Nishikori falls in first round upset at U.S. Open

NEW YORK (Reuters) - Fourth seed Kei Nishikori's hopes of making another magical U.S. Open run came to a quick end on Monday as last year's runner-up fell at the first hurdle, falling 6-4 3-6 4-6 7-6 (6) 6-4 to Frenchman Benoit Paire.