The former champion Lleyton Hewitt's revival at the U.S. Open was triggered by a marathon day of training with Roger Federer on the opening day at Flushing Meadows.
The 32-year-old Hewitt, who won the title 12 years ago has advanced to his first fourth round appearance at the U.S. Open since 2006.
Hewitt, who's now ranked 66th in the world, says he contacted Federer's coach Paul Annacone to set up a hit with Federer and they ended up having two training sessions on the same day.
PLAY AUDIO:TENNIS LLEYTON TP
IN:......ROGER AND I
OUT:...FOR FOUR HOURS
Hewitt, who's endured a succession of debilitating injuries in recent years, will play 31 year old Mikhail Youzhny in his next game.
Hewitt holds a 5-1 winning record over Youzhny.