Set an improbable target of 468 late on day three, West Indies lost their final six wickets for 51 runs and were bowled out of 210 to hand India a 257-run win in the second test at Sabina Park on Monday
The Chilean moved to Italy on a 10-month loan deal last week with United still paying a large chunk of his reported £400,000 ($484,000) week wages.
Second seed Nadal – the winner at Flushing Meadows in 2010, 2013 and 2017 – produced some electrifying moments of brilliance to end the challenge of Croatia's Marin Cilic 6-3, 3-6, 6-1, 6-2.
Australia will make at least one change, with star batsman Smith returning from the concussion he suffered after being hit by a 92mph Jofra Archer bouncer that ruled him out of the third Test.
The Olympic champion suffered the injury while playing a charity touch rugby game in October 2017 and has not raced internationally since.
Having been in the background for most of his career, Molefi Ntseki admitted that it’s his greatest achievement to be named Bafana Bafana coach.
Williams, a six-time US Open winner, romped to a 6-3, 6-4 victory over Croatian 22nd seed Petra Martic to set up a quarter-final with China's Wang Qiang, the conqueror of world number two Barty.
Tonga have been drawn with England, France, Argentina and the United States in Pool C, with only the top two teams to advance to the quarterfinals.
International Motoring Federation (FIA) race director Michael Masi said an investigation into the crash on Saturday that killed Formula Two driver Anthoine Hubert had already begun.
Harry Maguire said United must take their opportunities in front of goal if they are to keep up with their top four rivals.
