Rafael Nadal eased his way into the US Open semi-finals in New York beating fellow Spaniard Tommy Robredo in three straight sets.
The 2010 champion, seeded second, won 6-0 6-2 6-2 against the man who had knocked out Roger Federer in the previous round.
Nadal, 27, goes on to face Richard Gasquet in the semi-finals.
Rafa returned from a serious knee injury in February and has looked particularly strong on hard courts.
He said: "I think I played great the first set - it's my first set so far this year at 100% [meaning he won all the games in the set].
"I am very happy with the way that I moved myself on court, very happy with the way I hit my forehand and my backhand especially.
"So in general it was my best match of the tournament, so that's great news."
Meanwhile Defending champion Andy Murray will face a player in the form of his life when he takes on Stanislas Wawrinka in the quarter-finals on Thursday.
The ninth seed from Switzerland knocked out fifth seed Tomas Berdych in the fourth round and afterwards said: "I think I'm playing my best tennis ever."