Nadal, the 33-year-old Spaniard on Thursday came through in four sets 6-3 3-6 7-6 (7/5) 7-6 (7/3) which saw fiery but talented Australian Kyrgios receive a warning for unsportsmanlike behaviour after a running argument with the umpire while twice serving under-arm. Earlier, his great rival, eight-time champion Roger Federer had no such problems as he eased into the third round, beating British wild card Jay Clarke 6-1 7-6 (7/3) 6-2 to equal American legend Jimmy Connors's record of 17 appearances in the last 32.
Federer said his game had not been perfect but Clarke had helped his cause. 'I struggled to take care of business a bit from the baseline,' said 37-year-old Federer who has now reached the third round at the Slams for the 70th time. Ninth-seeded Isner, who played in the epic semi-final last year with Kevin Anderson which lasted over six hours, fell in five sets to unseeded Kazakh Mikhail Kukushkin 6-4 6-7 (3/7) 4-6 6-1 6-4 in just over three hours of play. Cilic, the 13th seed and finalist in 2017, lost in straight sets to Portugal's Joao Sousa, 6-4 6-4 6-4.