New York - Three-time champion Rafael Nadal cruised into the US Open last 16 on Saturday with a 6-3, 6-4, 6-2 win over 170th-ranked South Korean qualifier Chung Hyeon.
Second seed Nadal returned from three days of rest after a second round walkover to move through to a meeting with 2014 title-winner Marin Cilic or leading US hope John Isner.