Serbian champion continues to advance in his quest for a 10th title at the Grand Slam that has only been threatened by a hamstring issue.
Spanish tennis star Rafael Nadal has now won only one of his last seven matches on the ATP tour.
The three-day Laver Cup competition pits six of the best players from Team Europe against six leading players from Team World.
Federer, a seven-time champion, was ousted from one of his favourite tournaments in barely over an hour, falling in straight sets to a 21-year-old Andrey Rublev he had never faced.
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