The American survived 6-3, 6-4, 1-6, 7-6(4) to make the final four at the world’s most important tennis tournament for the first time.

"That note was never supposed to be public,” a smiling Fritz said after his 6-3, 6-4, 1-6, 7-6 (4) win over Karen Khachanov set up a semifinal meeting with two-time defending champion Carlos Alcaraz.