Three minutes to be added on at the end of the first half in South Yorkshire.

Mickey Walker
Former Doncaster Rovers director of football on BBC Radio Sheffield

It's a long way to get back into the game but Doncaster are working back into it.

They are passing better - playing through the Crewe back four, through their midfield.

Image source, Rex Features

Doncaster are building some momentum before half-time.

Tommy Rowe's glancing header at the near post is well saved by Max Stryjek.

Although he's just been booked, I've been very impressed with Aaron Rowe for Crewe.

He's been quick and direct pretty much every time he's got hold of the ball in an attacking area - something that was somewhat lacking in the first leg.

He's certainly given the Doncaster defenders something extra to think about.

Image source, PA Media

Doncaster's best opening of the game, which comes from a Crewe defensive error.

Rovers send one forward from deep and Ed Turns can only head it towards his own goal. Hakeeb Adelakun has a sniff of a chance, but it's blocked away for a corner.

Tom Anderson's header from the resulting cross is easily dealt with by Crewe goalkeeper Max Stryjek.

After that, Crewe's Aaron Rowe goes into the book for a foul on halfway.

Doncaster will be much happier with the way the past 10 minutes have gone. They're seeing a lot more of the ball in the Crewe half and the early momentum that the Alex created has subsided slightly.

Donny have a corner which seems to take an age to be taken, thanks to a combination of Chris Long not retreating far enough from the taker, the ball not being in the quadrant and some unnecessary jostling between players in the six-yard box.

When it arrives, it's headed clear at the near post.

Image source, PA Media

Half an hour gone and we're all square in the tie. I don't think many would have predicted that before kick-off.

If it stays like this - or indeed if it's level on aggregate with any score - then we'll be going to extra time and potentially penalties to decide which team goes to Wembley on 19 May.

That's better from Doncaster.

Hakeeb Adelakun slides a pass through to Joe Ironside in the box and his shot is blocked away for a corner by Crewe goalscorer Mickey Demetriou.

The delivery from the corner is much better from Adelakun, it goes right across the six-yard line, but nobody in a red and white shirt can get on the end of it.

Doncaster make their first real raid into Crewe territory and win a corner, but it's overhit and out of play at the far post - which just about sums up how things have gone for the home side in the first 26 minutes.

Peter Morse
Crewe summariser on BBC Radio Stoke

Crewe have just been so up for it. Adrenaline coursing through their veins; you can see it in their faces, in the way they are running.

They won't be able to keep up this pace but it's been brilliant from Crewe to cancel out that deficit so early in the game.

Both of these sides finished the League Two season on 71 points and were only separated by one goal on goal difference - but their respective form heading into the play-offs could not have been more different.

Doncaster ended the regular season with a 12-match unbeaten run, which included a sequence of 10 successive victories, before winning the first leg away from home.

Including the first leg, Crewe had won only one of their previous 10 games and have scored only four goals in that time.

That's what makes the current scoreline as surprising as it is.

Crewe striker Elliott Nevitt gets involved in a tangle off the ball with Doncaster's Matthew Craig and is shown a yellow card.

Image source, Rex Features

Earlier I mentioned the two previous times that a fourth-tier side has lost the first leg of a play-off semi-final by two goals and gone on to reach the final.

Well, in all divisions, only three teams have ever lost the first leg at home by two or more goals and progressed: Bradford (v Blackpool in 1995-96), Yeovil (v Nottingham Forest in 2006-07) and Northampton (v Cheltenham in 2019-20).

Mickey Walker
Former Doncaster Rovers director of football on BBC Radio Sheffield

You couldn't script it.

Two corners, two goals.

Doncaster have got to work their way back up now, it's a long way up that ladder. They've got it all to do.

Aaron Rowe again causes problems for Doncaster's defence on Crewe's left, and this time he puts in a low cross which lands at the feet of Chris Long, whose shot is well saved.

Another corner...

Peter Morse
Crewe summariser on BBC Radio Stoke

Doncaster look rattled, a bit shaken at the back. They are not going to stay rattled for the next 80 minutes but it's certainly given them a reminder that they are in a tie.

It's not going to be a cakewalk.

Aaron Rowe's tricky footwork on the edge of the Doncaster box sets up a chance for Chris Long, who sends a shot wide from 20 yards.

Doncaster have plenty of experience within their ranks and now would be a good time for them to settle things down a bit, having seen their first-leg advantage halved in the early stages.

Image source, Rex Features

That's Mickey Demetriou's TENTH goal of the season. Not bad for a centre-back, is it?

It was his error that led to Doncaster's second goal in the first leg, so he'll be happier than most to have got himself on the scoresheet this evening.

Mickey Walker
Former Doncaster Rovers director of football on BBC Radio Sheffield

Wow.

Nobody picked Mickey Demetriou up. He's a big guy but really he shouldn't get above the goalkeeper, he shouldn't get above Tom Anderson and Richard Wood.

Six minutes and it's all to play for.