Roger Federer:  "Novak has had a tremendous year, there's always a lot on the line when we play. He's the best mover on the hard courts, he's tough mentally, but I like that challenge and I'll be ready for it.

"Serena has done unbelievably well, maybe it just wasn't meant to be. We're lucky that she's still playing tennis."

Liam Walton:  Federer is just unbelievable. Even at the age of 34, he makes it look so easy! Class is permanent.

Roger Federer:  "Obviously I am very happy. It's been a great tournament so far - I have tried so hard over the last six years to the get back into the final, and tonight it worked. 

"I'm serving very well, I'm going for my shots, I'm playing positive tennis. I practised for years in front of nobody, I'm not going to throw away moments like this."

Russell Fuller
BBC tennis correspondent on Radio 5 live Sports Extra

"You run out of superlatives. There is nothing that Stan Wawrinka can do to stop the Roger Federer juggernaut rolling artistically onward."

Jeff Tarango
Former professional tennis player on BBC Radio 5 live Sports Extra

"The fans are on their feet clapping as if Federer has just finished a concerto."

Jeff Tarango
Former professional tennis player on BBC Radio 5 live Sports Extra

"Federer is really in the zone. He looks really mentally fresh. He's getting more sleep now, because his kids have grown up a little."

Russell Fuller
BBC tennis correspondent on Radio 5 live Sports Extra

"It's almost like Federer is in a race with Novak Djokovic. This goes down as more impressive. It's a remarkable demolition."

Here's Jonathan Jurejko to take you through to the conclusion...

Wawrinka is under siege. This is a man who has won two Grand Slam titles and he quite literally doesn't know what to do. Such is Federer's brilliance, he's reduced to trying impossible winners and hopelessly over-ambitious trick shots. 

He balloons a forehand long to bring up 0-40 and three set points. Federer needs only one. A seventh US Open final is in sight.

Jeff Tarango
Former professional tennis player on 5 live sports extra

This is glorious, artistic tennis from Federer. He's going through the whole repertoire at the moment. When Wawrinka tries to put a smash into the empty court, Federer is there. When Wawrinka tries to lob him, Federer somehow scrambles back and manages to flick it disdainfully back past him. Wawrinka can't lay a glove on him.

Russell Fuller
BBC tennis correspondent

The scoreboard might be all square - but there's no doubt who is under the more pressure. A mishit from Federer forces Wawrinka back, and suddenly he's in trouble again at 0-30. Stan goes long and Federer has three break points. Wawrinka fires long again, and Federer is in charge in the second set.

The Federer serve is well and truly firing. The ball toss, the arch of the back, the rapid arm all flowing in one seamless movement - the ball more often than not kissing the corner of the service on its way past Wawrinka. If that doesn't work, saunter to the net and poke a volley past Stan. Easy peasy.

Russell Fuller
BBC tennis correspondent on 5 live sports extra

If Federer was a boxer, he wouldn't just have quick hands and a pretty left hook, he'd also be adept at soaking up punishment. He rides a couple of huge groundstrokes from Wawrinka and loops a big forehand winner into the corner.

Wawrinka sends a simple volley into the net and it's break point Federer. A big serve comes to Stan's rescue. Then it's another pistols-at-dawn point at the net, with Federer emerging victorious with a volleyed winner.

Another break point, but Stan closes it out with a good volley of his own, which he follows with a bellowed 'Come on!' Two big serves, and he's in the clear.

Wawrinka garnered a lot of attention during the French Open for wearing shorts that were more garish than a hippie's tablecloth, but disappointingly, he's bedecked in a crisp white pair today.

Federer rattles through another brisk game, scooting to net to punch away a couple of volleys. We remain on serve.

Jeff Tarango
Former professional tennis player on 5 live sports extra

Federer tries to charge the serve again, but this time he finds the net. A booming backhand down the line takes Wawrinka to 40-0, and Federer coughs up the game when he nets a forehand.

Bradley Cooper is in the audience. So far today we've seen him, Sean Connery and Canadian rapper Drake, which coincidentally is the line-up for my dream dinner party.

Talking of dreams, Roger Federer's serve is pretty dreamy - he finds the corners with pinpoint accuracy for an impressive hold to love.