Nishikori sees off qualifier

Nishikori, the two-time defending champion and top seed, defeated his American opponent 3-6 6-3 6-4 to set up a quarter-final against Austin Krajicek.

The 25-year-old from Japan clinched the win on his fourth match point and told afterwards: “It’s good for confidence but I have to raise my level a little more tomorrow.”

Krajicek booked his place in the last eight with a 7-6 (7/4) 4-6 6-4 victory over fifth seed Ivo Karlovic, last year’s runner-up.

Sam Querrey recorded a 6-4 6-1 success against Jared Donaldson and will face John Isner in the quarter-finals, after Isner defeated Ivan Dodig 6-4 7-6 (7/5) in Wednesday’s final match.