MIKE DICKSON AT FLUSHING MEADOWS: Venus Williams is even older than Roger Federer, and her season of 2017 has been barely less extraordinary.
Sportsmail's tennis correspondent Mike Dickson looks ahead to day four at the US Open with Andy Murray, Aljaz Bedene and Johanna Konta all in action at Flushing Meadows.
MIKE DICKSON AT FLUSHING MEADOWS: Roger Federer and Mikhail Youznhy have an aggregate age of 71, and it certainly looked that way as the Swiss master had to battle through.
Serena and Venus have been pictured preparing for their respective US Open fourth round matches side by side at Flushing Meadows. The two are on track to play each other in the semis.
MIKE DICKSON AT FLUSHING MEADOWS: Roger Federer did little to encourage the thought that he could win three Grand Slam titles this year after labouring through his US Open first round.