Oh my word - Jimmy Gopperth kicks the winner with 80 up on the clock and Wasps reach the semi-finals of the Champions Cup. 

Heartbreak for Exeter.

Wasps drive a maul forward, and just when Exeter think they've nabbed the ball, the Chiefs are penalised again. Another kick for the corner for the hosts. They need a converted try to nab this.

Another drive forward from the line-out for Wasps. Exeter's defence rallies and stays strong. One minute to go!

Ashley Johnson searches for Joe Launchbury in the line-out but it goes long and Exeter eat the ball up with ease.

But Wasps earn a penalty, with two Exeter players offside, and they kick for the corner to leave them 15 metres out. 

Image source, Rex Features

A Wasps line-out is flicked back and replacement Ashley Johnson sprints forward, but eventually the hosts are pushed back into their own half again.

Gareth Steenson cross-kicks to Olly Woodburn, as Exeter start their own assault for the try line but their attack is stalled in the centre of the field.  

This battle between second and third in the Premiership is outstanding.

Wasps storm into the Exeter 22 and are patient as they try and push for the try line.

Bundles of bodies pile on in the left-hand corner. A desperate attack for the hosts is ended as Dave Ewers claws back the ball and Exeter clear. 

Exeter build through the phases - 10, 11, 12. 

But the ball is stolen by George Smith - a cracking turnover - and Wasps regain some ground with a kick into touch. 

Jeremy Guscott
Former England international on 5 live Sports Extra

"Wow, wow, wow! I thought Wasps' first try was amazing but this...it has been continuous play for minutes. 

"They broke from their own goal posts into the Exeter 22 and some amazing trickery, running, support running and vision ends in an amazing try. Wasps might have given themselves a chance."

Those Exeter legs are driving again, they're heading closer to the try line. Wasps know what's coming and they're trying their best to stop it.

Just as you think Exeter are over, Wasps turn it over through Ashley Johnson and Elliot Daly goes on the charge down field from behind his own posts! Wasps have gone 80 metres before being held up. What a counter!

Image source, Rex Features

The number 10s exchange kicks up and down the muddy pitch and Exeter win a line out on the halfway line.

Gareth Steenson senses there's a gap cross-field and boots it into space in the Wasps 22. The visitors very much in control now.

Jeremy Guscott
Former England international on 5 live Sports Extra

"It is going to take a special moment from one of these special Wasps players to get them back into the game. If they can produce a magic moment then they have a chance.

"Exeter have taken full advantage of the opportunities they have worked themselves, Wasps didn't after dominating territory and possession in that opening 30 minutes."

The referee gives the advantage for Exeter, before play is pulled back as Wasps captain James Haskell is penalised for not rolling away at a ruck. 

Gareth Steenson lines up right in front of the posts from five metres out and boots over. Even I could have scored that one, to be fair. 

This game is moving at an electric pace and Wasps are rattled, you can tell.

The hosts earn a scrum in a central position and it's messy, but possession is saved by Dan Robson.

Jimmy Gopperth and Jack Nowell exchange long kicks, and as Gopperth tries to keep the ball in play, it bounces out off his foot for a Chiefs line-out. 

Jeremy Guscott
Former England international on 5 live Sports Extra

"Exeter have missed a huge opportunity there. That would have finished the game off. It would have left Wasps with too big a mountain to climb."

Image source, PA

Drama drama drama!

Exeter's pacy winger Olly Woodburn pings the ball to Geoff Parling out on the left flank and the England lock crashes over, but the referee says no try - forward pass.

Exeter back Henry Slade gives a long-range penalty an almighty thud but he can't quite get it over. 

He looks frustrated, but it was a tough one for the lad from three metres inside his own half. 

Jeremy Guscott
Former England international on 5 live Sports Extra

"This is going to take an incredibly special performance from Wasps to come back now. Even at home, even with this crowd behind them."

Image source, Rex Features

Harry Williams, with his golden locks, gets down low and tries to slide under the posts. 

The TMO is having a good look, as no one is sure if he's lost contact with the ball or not.