Kei Nishikori suffers shock US Open exit as 2014 runner-up loses in first round to Benoit Paire

Kei Nishikori's hopes of making another magical US 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.