Oh la la!

What a point! Roger Federer and Stan Wawrinka is an epic armwrestle, a look down the line for Stan, he hits his forehand well, but a plunging Roger makes the volley to take the mini-break! 0-2.

Wawrinka holds serve next, but is behind on the scoreboard.

A shoot-out on Suzanne Lenglen.

Roger Federer is first to pull out of the holster and holds service. 0-1.

And we're going to have a tie-break...

Stan Wawrinka glances at his strings after misplacing a volley, but edges his way to 30-15 nonetheless.

Jonathan Jurejko
BBC Sport at Roland Garros

Those watching the big screen outside Chatrier clap and cheer when Federer finally gets over the line in that service game.

Even some of those with pocket-burning Chatrier tickets are more interested in this Swiss humdinger.

Tens of fans in the top tier are standing on the balcony facing the giant TV on Court One rather than go court-side and watch Nadal tearing up Nishikori.

Finally, Roger Federer holds after an epic service game. Two and a half hours into this quarter-final and he moves within one game of taking the third set.

*denotes next server.

Image source, Getty Images

Close-range smash as the net from Roger Federer to make it advantage, zipping return from Stan Wawrinka to level it up at deuce.

Federer saunters into the net to steal another drop-volleyed winner, but back comes Stan again! Deep return from the Swiss number two, forcing the man in his country's number one spot to cup into the dregs of the net.

Roger Federer absorbs the Stan Wawrinka attack and then accelerates into a forehand that almost leaves his opponent doing the splits.

But he can't close out. Deuce, again, as this game ticks into its seventh minute.

Give us a breather, gents...

Break point number two for Stan Wawrinka in this game after Roger Federer miscues.

But again the third seed saves with a meaty serve.

Saved by Roger Federer!

This keeps sliding one way and then the next. Wawrinka tries to take the 20-time Grand Slam champion on at the net, but Federer meets it to gently coax a volley into the bare clay.

Deuce.

Image source, EPA

There's no stopping Stan... pure power to undo Roger Federer at the net. It's break point Wawrinka.

Roger Federer looks angry. Will he rue not taking those set points? The Swiss steamrollers his way to 30-0, serves two lets, and then is undone by a Stan Wawrinka masterclass.

*denotes next server.

Mammoth hold from Stan Wawrinka and he roars to the Parisian crowd like an Alpine bear.

Stan saves again! Deuce, then a rasping serve down the middle. Advantage Wawrinka.

Roger Federer goes... wide! Stan Wawrinka holds on.

The 2015 champion steams into the net on the next point and can only watch as Roger Federer pulls off a perfectly weighted lob.

A second set point.

We're starting to see the best of Fed, but it's matched with the resilience of Stan.

Federer opts for the back-spinning backhand, almost slicing the ball in half like a Teppanyaki chef, to trickle it over the net, and now he has set point...

Image source, Getty Images

Rafael Nadal appears to be cruising through. The Spaniard has taken the first set 6-1 against Kei Nishikori on Court Philippe Chatrier.

Sublime from the grand master... drawing Stan Wawrinka in and then seizing the point with a magical backhand winner into the space left behind. He holds.

*denotes next server.

A premature cheer from the crowd as they think Roger Federer has screamed a winner beyond Stan Wawrinka, only for the bulldog-like Swiss to stick strings on it and watch Federer loop the response into the tramlines.

Federer saunters into the net to make no mistake from the next point.

40-15.

And Federer breaks back immediately! We're back on serve in the third set.