US Open: Jack Draper forced to retire in the third set against Karen Khachanov due to hamstring injury
Jack Draper is out of the US Open after retiring at 3-6 6-4 5-6 against Karen Khachanov. The in-form 20-year-old was having a fine run at Flushing Meadows having knocked out Emil Ruusuvuori and No. 6 seed Felix Auger-Aliassime in the opening two rounds.


