No. 3 seed Stan Wawrinka takes on No. 10 seed Kei Nishikori in a marathon US Open 2014 quarterfinal. Nishikori comes into the match less than 48-hours after his 4 hour 19 minute Round 4 win over Milos Raonic ended at 2:26am, tying the US Open record for the latest finish of a match. Can he become the first Japanese man to reach the semifinals of the US Open or will Australian Open champion Wawrinka prevail?

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