DALLAS, TX - FEBRUARY 12: John Isner (USA) serves during the Dallas Open on February 12, 2022 at the Styslinger/Altec Tennis Complex in Dallas, TX. (Photo by George Walker/Icon Sportswire via Getty Images)
DALLAS, TX - FEBRUARY 12: John Isner (USA) serves during the Dallas Open on February 12, 2022 at the Styslinger/Altec Tennis Complex in Dallas, TX. (Photo by George Walker/Icon Sportswire via Getty Images)