It's a big point at 15-15 on Nadal's serve. Both players come to the net and Nadal slams the ball down to win it.

Federer fist pumps after coming to the net and landing a forehand to go 30-15 up.

Nadal hits a shot wide, then returns into the net and Federer holds.

The wind is still blowing on court, but it seems to have gone out of both these players' sails over the last couple of games.

Greg Rusedski
Former British number one on BBC Radio 5 Live

That felt like a reprieve game for Federer - like he was looking to preserve some energy.

Image source, Getty Images

Clay is blown into the air and a spectator's hat is blown onto the court. A ballboy puts it in the fridge. Quick thinking.

Nadal serves an ace to hold.

The sun is shining on Chatrier now, but it's still gusty enough that Federer has to brush his hair away as it's blown into his eyes.

Nadal hits a forehand wide and it's 15-15 on his serve.

Superb play from Federer, he fires a forehand at Nadal. The 11-time French Open champion cannot respond and Federer holds.

*Denotes next server

The wind is playing a significant factor in this match. It is taking around three minutes longer on average to hold serve at one end of the court.

Image source, AFP

Nadal comes to the net and Federer leaves him with plenty of open court to put the ball away. The Spaniard holds.

Nadal goes 30-15 up on his serve but Federer is making him work for every single point. The rallies are so long. This is a real battle.

Image source, Getty Images

Greg Rusedski
Former British number one on BBC Radio 5 Live

Just sensational stuff from Rafa - he is the greatest male competitor in this sport.

If you don't put away your chances then Rafa will punish you.

WHAT?!

Federer comes to the net for a smash, but Nadal gets on the end of it and somehow manages to hit a forehand winner. Nadal breaks back, no idea how.

It's Federer's turn to hit the ball long this time and Nadal has another break point.

This is not Federer's first rodeo. He steps up his serve to save both break points.

Nadal helps him out by hitting a forehand long, but then hits a winner down the line to bring it back to deuce.

Image source, Reuters

A blistering cross-court backhand from Nadal brings up two break points.

That wind doesn't seem to be helping him much, though.

Nadal goes 30-0 up.

Greg Rusedski
Former British number one on BBC Radio 5 Live

The nice thing for Roger is that he will be serving now on the right side with the wind.

Federer's return lands long. First break point saved.

But Nadal cannot save the second! A powerful Federer forehand is too much for Nadal. The Spaniard's return is wide.

Image source, Reuters

Nadal misses his first serve and attempts to serve and volley on his second. It goes into the net. Two break points Federer.

The crowd are loving this.

My, my.

Nadal puts his head in his hands as he spins a backhand wide. 0-30.

Nadal runs to the net and his forehand lands wide. That's a big hold for Federer.

Image source, EPA