WIMBLEDON, England—When Sebastian Korda struck his last competitive shot as a 20-year-old—an overhead winner that closed out a third-round victory over Wimbledon’s No. 22 seed on Friday—the American raised both arms, then doubled over and rested his hands on his knees.
Up in a Centre Court guest box, the body language of his father, 1998 Australian Open champion Petr, was strikingly similar. Arms in the air, then leaning forward, reaching for the railing in front of his seat.





