Young gun Shelton first through to quarter-finals

With five Americans playing in eight matches on the two steamy show courts, the home fans had plenty to cheer as the US men continued their push to end a 20-year U.S. Open title drought.

In a rematch of their Australian Open quarter-final, Shelton avenged his four-set loss in Melbourne. 

Paul was out smartly to a 3-0 lead but it was all downhill from there as the big-hitting Shelton blasted away, hammering down two 149mph serves, the fastest seen at Flushing Meadows this fortnight.

Paul recovered from 4-1 down in the third set to take it 6-4 but Shelton held steady, breaking his compatriot to take the fourth set 6-4 and seal the win.