American John Isner returns a shot against Juan Martin Del Potro on Friday, March 30, 2018.
American John Isner returns a shot against Juan Martin Del Potro on Friday, March 30, 2018. Pedro Portal pportal@miamiherald.com
American John Isner returns a shot against Juan Martin Del Potro on Friday, March 30, 2018. Pedro Portal pportal@miamiherald.com

Playing his best tennis in a long time, Isner stuns the crowd favorite at the Miami Open

March 30, 2018 05:01 PM