Federer shut down his season to rest a knee injury which was aggravated in a semi-final loss at Wimbledon .
Federer is the winner of a record 17 majors and a five - time champion in New York .
Federer , the winner of a record 17 majors and a five - time champion in New York , shut down his season to rest a knee injury which was aggravated in a semi-final loss at Wimbledon .