Roger Federer is looking forward to facing Rafael Nadal in the Wimbledon semi-final on Friday but admits he is wary of the task ahead.
Federer defeated Kei Nishikori in four sets to book his place in the last four, while Nadal was a straight sets winner over Sam Querry and the two rivals will go head-to-head at SW19 for the first time in 11 years.
On that occasion it was the Spaniard who prevailed in an epic final in 2008 but Federer is looking forward to having the opportunity to gain revenge on his long-time rival.
"He has improved so much over the years on this surface. He's playing also very different than he used to," Federer said.
"We haven't played each other in a long, long time on this surface. He's serving way different. I remember back in the day how he used to serve, and now how much bigger he's serving, how much faster he finishes points.
"It's impressive to see how sort of healthy he's stayed. A lot of them are saying, 'Oh, it's the end', by 2008. Similar to me in 2009. We're still here. So it's nice to play each other again."
Nadal, meanwhile, is delighted to be back in the last four and is excited at the prospect of facing Federer.
"It's a great feeling to be back in the semi-finals, be able to be playing at this level of tennis is great news," he said.
"Now to play against Roger always is a unique situation. I'm excited to be back on this court against him after 11 years. It means a lot for me and probably for him, too.
"I'm excited about this match, excited about this opportunity. Always I say the same: of course, the opportunities to play against each other every time are less, but we are still here.
"I just expect to play against probably the best player of the history on this surface, and I know that I have to play my best if I want to have chances to try to be in that final.
"I know he's playing well. He feels comfortable here. And me, too. I'm playing well."
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