By Mike Dickson for the Daily Mail
Published: 22:33 BST, 1 September 2019 | Updated: 23:26 BST, 1 September 2019
If Dan Evans thought he had it hard against the suddenly revitalised Roger Federer then it was even worse for the unfortunate Belgian No 1 David Goffin.
Having allowed the British No 2 just five games in their third-round encounter, the 38-year-old Swiss was in even more miserly form, brushing aside another talented ball-striker for the loss of just four.
This has been a completely unforeseen turnaround for the recently beaten Wimbledon finalist, who looked so shaky in the first two rounds that he resembled an upset waiting to happen.
Roger Federer served a reminder of his class by beating David Goffin 6-2, 6-2, 6-0 at US Open
As his direct contemporary Serena Williams battled away, Federer is