D’Arcy MaineESPN.comAug 31, 2023, 03:56 PM UG6 Minute Reading An emotional John Isner says goodbye to tennis John Isner was emotional after ending his singles career in the second round of the US Open to Michael Mmoh. NEW YORK — John Isner’s 17-year tennis career ended Thursday after his second round loss to fellow American… Continue reading Michael Mmoh ended John Isner’s career with a 5-set victory at the US Open