Next up on court at Arthur Ashe Stadium, it's World No.1, Rafael Nadal against the much-loved Argentinean Juan Martin Del Potro. It's not the latest chapter in the Nadal-Federer rivalry, but it's still a tasty encounter with Delpo hoping to emulate his triumph back in 2009 and Rafa aiming to move one step closer to a 16th major title. The players are due on court shortly in what promises to be a titanic tussle.