Derby become first team to lose first leg at home and reach Championship play-off final
Marriott comes off bench to score twice in stunning Derby comeback
Rams come from 2-0 down in tie after Dallas put Leeds in front on night
Both sides finish with 10 men as Leeds' Berardi and Derby's Malone sent off
Rams will face Aston Villa at Wembley on Monday 27 May
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Daniel Woodley: This is why we love football! Over the past week we have been treated to some absolutely fantastic entertainment! I don't want the season to end!
Cossall: I’m watching the BBC updates in the Pyrenees and can’t believe what an end to end game it is.
James Burke: Villa, Derby, Leeds and West Brom fans - Not a fingernail left between them.
Leeds 2-3 Derby (3-3 agg)
A slight break in play as both sides take on fluids and Derby's Harry Wilson gets some treatment.
You get a feeling there will be another goal in this one.
If not, extra time looms large.
Leeds 2-3 Derby (3-3 agg)
Luke Ayling sees his name up in lights as the ball drops to him on the edge of the area.
Urged to shoot by the crowd, he gets it all wrong and his effort is wayward.
Leeds 2-3 Derby (3-3 agg)
Kiko Casilla you lucky, lucky man.
The Leeds keeper comes to claim a hopeful free-kick from haklfway and gets nowhere near it.
But the ball rebounds off Jack Marriott, who was grappling with Mateusz Klich on the edge of the box, and into the Spaniard's grateful arms.
I thought Casilla had regained his composure, but maybe not.
Leeds 2-3 Derby (3-3 agg)
Harry Wilson goes to shoot, left-footed, at the near post.
The ball hits Jack Harrison in the Leeds wall.
Leeds 2-3 Derby (3-3 agg)
Free-kick to Derby right on the edge of the Leeds area as Harry Wilson goes down under the challenge of Gaetano Berardi.
The Swiss defender is booked and Wilson is standing over this.
Leeds 2-3 Derby (3-3 agg)
Ian Woodcock
BBC Sport at Elland Road
Incredible. Just incredible.
It'd take a braver person than me to call this now.
After the tight defensive battle at The Hawthorns yesterday this is like a whole other sport.
Image source, PA
Image source, Getty ImagesLeeds 2-3 Derby (3-3 agg)
Replays show that Stuart Dallas might have been marginally offside for his second goal as he received Mateusz Klich's lay-off.
Leeds fans won't care one bit but Derby fans may have cause for complaint.
Leeds 2-3 Derby (3-3 agg)
Derby keeper Kelle Roos eventually gets his hands on the ball from the Leeds set piece.
Can we all draw breath yet? This is turning into a play-off classic.
Leeds 2-3 Derby (3-3 agg)
Derby midfielder Mason Mount becomes the latest name in the book for a foul on Stuart Dallas on the left.
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Tom Dee: Leeds do my head in! Almost automatic promotion and now determined to stay in the Championship!
Andrew Priestley: Stuart Dallas, what a player. He’ll run all day and night for you along with the ability to deliver an end product just like that as well. I hope he gets a shot at Premier League football.
Leeds 2-3 Derby (3-3 agg)
Now Luke Ayling comes forward and gets in on the act.
He exchanges passes with Patrick Bamford and has a sight of goal inside the area.
But he loses his footing and his effort goes wide.
Leeds are back with the bit between their teeth.
Stuart Dallas
Image source, ReutersHang on, another goal.
Stuart Dallas runs down the left and gets on the end of a nice touch from Mateusz Klich inside the area.
He then cuts inside and sends a right-footed shot into the bottom right-hand corner.
The left-back has revived Leeds' hopes and is now on a hat-trick.
Leeds 1-3 Derby (2-3 agg)
We've seen some incredible comebacks in the Champions League this season, but I did not see Derby coming back when they went 2-0 down on aggregate.
Three goals in 13 minutes have turned this tie on its head.
Leeds United fans are in shock, the travelling rams are loving it.
Leeds 1-3 Derby (2-3 agg)
The Rams make their second change, bringing on experienced midfielder Tom Huddlestone for Mason Bennett.
Harry Wilson pen
Image source, ReutersCalmness personified from young Harry Wilson.
Left-footed, he sends Kiko Casilla the wrong way and strokes the ball into the bottom right-hand corner.
The comeback is complete, and the Rams are in the driving seat all of a sudden.
Leeds 1-2 Derby (2-2 agg)
On the edge of the Leeds box, Tom Lawrence tries to pop a ball through to Mason Bennett.
The forward goes down as he has his shirt pulled by Liam Cooper.
No hesistation from Anthony Taylor... it's a penalty, and a yellow card for the Leeds skipper.
Leeds 1-2 Derby (2-2 agg)
Leeds have rallied.
Another ball into the Derby box is cut out and the ball drops to the edge of the area to Mateusz Klich, but he gets his shot all wrong.
Leeds 1-2 Derby (2-2 agg)
Colin Hazelden
BBC East Midlands Today Sports Reporter
Ladies and Gentleman, Boys and Girls: what we have here is a PROPER cup tie!
Leeds 1-2 Derby (2-2 agg)
Leeds come again.
Stuart Dallas forces Kelle Roos into a save with an effort from outside the box.
The Dutchman spills it and Pablo Hernandez has a dig, but sees his shot blocked by Scott Malone.
A good response from the hosts.