Next up for the US - American will be Reilly Opelka 7 - 5 .
Reilly Opelka beat fellow countryman Jared Donaldson in the final singles match of the evening 6 - 1 .
Next up for the US - American will be Reilly Opelka , who beat fellow countryman Jared Donaldson in the final singles match of the evening 6 - 1 , 7 - 5 .