Nadal breakspublished at 14:04 British Summer Time 7 June 2019
Federer 3-6 4-6 1-2 Nadal*
But he only needs one.
Federer is caught on the move and cannot return the ball.
World number one Novak Djokovic loses first set 6-2 to fourth seed Dominic Thiem in French Open semi-final but takes second 6-3
Thiem leads 3-1 in third set when play is suspended because of rain
Winner will face defending champion Rafael Nadal, who beat Roger Federer 6-3 6-4 6-2
Britain's Johanna Konta loses 7-5 7-6 (7-2) to Czech teenager Marketa Vondrousova in women's semi-final
Vondrousova will face Ashleigh Barty in Saturday's final after the Australian eighth seed beat Amanda Anisimova in three sets
Becky Grey and Saj Chowdhury
Federer 3-6 4-6 1-2 Nadal*
But he only needs one.
Federer is caught on the move and cannot return the ball.
*Federer 3-6 4-6 1-1 Nadal
Federer shakes his head as his forehand lands the wrong side of the tramline. Nadal has two break points.
*Federer 3-6 4-6 1-1 Nadal
Uh oh.
Federer comes to the net and hits an errant forehand. 0-30.
*Federer 3-6 4-6 1-1 Nadal
Nadal's hold of serve comes much more easily.
Federer's backhand return lands wide to bring up 40-0 and the Spaniard serves an ace to close out the game.
Federer 3-6 4-6 1-0 Nadal*
Nadal's shot hits the net chord and bounces backwards. He puts his head in his hands. Break point lost.
Federer puts in two speedy serves to hold.
*Federer 3-6 4-6 0-0 Nadal
Federer looks to the ground as Nadal slams another forehand past him. Break point.
*Federer 3-6 4-6 0-0 Nadal
Nadal is at full reach, but somehow still manages to slam a forehand winner. 30-30 on Federer's serve.
*Denotes next server
*Federer 3-6 4-6 Nadal
Greg Rusedski
Former British number one on BBC Radio 5 Live
If it's windy like today then Nadal will beat Djokovic in the final but if it's calm and the conditions are heavy then Djokovic has a shot.
Novak Djokovic plays Dominic Thiem in the other semi-final later
Federer 3-6 4-6 Nadal
As this chart shows, Rafael Nadal is pretty accustomed to victory at Roland Garros.
And he looks like he's cruising towards another final.
Federer 3-6 4-6 Nadal
Federer hits a forehand long and that's that.
Can you come from two sets down against Rafael Nadal on clay? Seems very unlikely.
Federer 3-6 4-5 Nadal*
Greg Rusedski
Former British number one on BBC Radio 5 Live
Rafa's beautiful slide to the ball to reach the drop - he sensed the moment and took advantage.
What Federer has done is enough to take a set against anybody else.
Federer 3-6 4-5 Nadal*
Federer's coach Ivan Ljubicic bites his nails as Nadal goes 40-0 up.
Three set points.
Jonathan Jurejko
BBC Sport at Roland Garros
If you can’t get on Chatrier then this seems to be next best place to be.
The area between the newly-built show court and the screen on the side of the soon-to-be demolished Court One is packed.
Those at the front are perched on blankets, or overcoats masquerading as blankets, on the floor.
Those at the back are straining on tip toes to see the action.
Federer 3-6 4-5 Nadal*
What a rally! It seems endless, until Nadal finishes it off with a forehand winner.
The Spaniard comes to the net on the next point and taps the ball over to break.
He'll be serving for the set next.
*Federer 3-6 4-4 Nadal
A flurry of errors from Federer and suddenly it's deuce.
The door is ajar for Nadal. A set down and 4-4 in the second is not a good time to be broken.
*Federer 3-6 4-4 Nadal
The crowd are on their feet. Federer plays a beautiful drop shot but Nadal sprints forward to get it, before the Swiss comes to the net to close out the point. 40-0.
*Federer 3-6 4-4 Nadal
Greg Rusedski
Former British number one on BBC Radio 5 Live
If Nadal goes up two sets to love then it'll be almost impossible for Federer to come back.
So demoralising for Federer to see Nadal to produce a pass down the line like that one before he closed out the game.
We then saw the emotion from Rafa.
This rivalry just gets better and better.
*Federer 3-6 4-4 Nadal
How has he done that? Federer builds the point perfectly but Nadal lands an impossible forehand just inside the baseline.
Federer returns the next serve into the net at Nadal holds. This match promised a lot and it is delivering so far.
Federer 3-6 4-3 Nadal*
He was up against the wall, but Nadal hits another huge cross-court backhand. 40-30.
Federer hits a lovely passing shot and it's back to deuce as the crowd chant 'Roger'.
Federer 3-6 4-3 Nadal*
But wait... a double fault from Nadal brings up 30-30.