Lower Ranked Players Winning

There are lower ranked male tennis players winning the fourth round. Here are the latest winners:

Jiri Lehecka win against Felix Auger-Aliassime (6): 4-6, 6-3, 7-6 (2), 7-6 (3)
Karen Khachanov (18) win against Yoshihito Nishioka (31): 6-0, 6-0, 7-6 (4)
Sebastian Korda (29) win against Hubert Hurkacz (10): 3-6, 6-3, 6-2, 1-6, 7-6 (7)

World's Number 7 Felix Auger-Aliassime was defeated by non-stop 50 Jiri Lehecka, while Number 11 Hubert Hurkacz was defea8by Sebastian Korda.