New York: Japan's Kei Nishikori booked a US Open quarter-final berth on Tuesday morning with a five-set victory over Milos Raonic that equalled the latest-finishing contests in the tournament's history. Nishikori, the 10th seed, defeated the fifth-seeded Canadian 4-6, 7-6 (7/4), 6-7 (6/8), 7-5, 6-4 and will face Australian Open champion Stan Wawrinka for a place in the semi-finals.

The 2:26 am (0626 GMT) finish equalled the record for the latest at the US Open shared by two prior contests: Philipp Kohlschreiber's 6-4, 3-6, 4-6, 6-3, 6-4 third-round win over John Isner on September 3, 2012 and Mats Wilander's 7-6 (7/3), 3-6, 1-6, 7-6 (8/6), 6-4 win over Swedish compatriot Mikael Pernfors in a second round match in 1993.