Tiafoe reached the quarterfinals for the third year in a row with a 6-2, 6-7(4), 7-5 win, while Jordan Thompson won the longest match in event history.

American teenager Alex Michelsen will be the first opponent for No. 1 seed Frances Tiafoe.

As Michael Mmoh put a bow on elder statesman John Isner's career, the next generation of U.S. men proved that they are, in fact, generation now.