It's just a penalty though and Johnny Sexton kicks to the corner.

Richard Wigglesworth puts up a box-kick and Alex Lozowski gives chase. But he's whacked Rob Kearney in the face and Jerome Garces wants to check if he's taken him out in the air.

Owen Farrell is going for goal. He's 5m out right in front so it goes right over. Saracens take the lead for the first time.

Paul Grayson
Former England fly-half on BBC Radio 5 Live

That initial break from Jackson Wray came from a Will Skelton mistake, the ball popped up to Wray, the Leinster defenders thought Saracens had made a mess of it but Sarries were away.

You were certain they were going to score with a four-man overlap.

And Fardy is in the bin! Deja-vu.

Barrington did make it to the post but he was too high up. It has to touch right at the bottom. Saracens penalty because Scott Fardy was offside.

Vincent Koch grabs the ball off Billy Vunipola on the floor and is up to a few metres out. Maro Itoje goes for the score even though he has so many men over on the left.

Richard Barrington might have scored at the base of the posts though. Jerome Garces is going to check.

Sean O'Brien breezes through a Maro Itoje tackle, then sends George Kruis to the floor too. Not many people can say they've made it through those two.

Luke McGrath clears and Jackson Wray takes his chance. He finds a slither of space and sprints up to Leinster's 22m line.

And that brings about a break in play meaning scrum-half Richard Wigglesworth can come on. Mark McCall wants his experience on as we approach the 60-minute mark. Ben Spencer leaves the field.

A chance for Scott Fardy! He intercepts, but throws it straight back into Saracens hands.

Alex Goode puts in a beauty of a kick, pinging it off the right of his boot to test Jordan Larmour.

And the Irishman hasn't exactly passed with flying colours as he's brought down on the 5m line. Luke McGrath clears and Goode gathers.

Paul Grayson
Former England fly-half on BBC Radio 5 Live

It is as tight as the score suggests. The quality and the amount of rugby on show has been breathtaking.

The scrum spins around and Jerome Garces wants to reset as Saracens' Richard Wigglesworth is poised on the sidelines. He'll be replacing Ben Spencer.

James Burridge
BBC Radio 5 Live rugby reporter

That change is huge because Cronin is the tournament's leading try scorer. The momentum shifts, you feel them down here, and you can almost touch the energy on the bench. This is a pulsating final.

And Tracy doesn't have the best start. His throw isn't straight and Leinster are penalised.

Big change for Leinster. Hooker Sean Cronin is replaced by James Tracy.

Paul Grayson
Former England fly-half on BBC Radio 5 Live

Absolute powerhouse carries from Leinster, one after the after to make ground, but they were fixated with route one when Ringrose only had two defenders and there were four Leinster players. It was a walk-in but he chose the wrong option.

And the pendulum swings back!

George Kruis is turned over on the floor.

Billy Vunipola finds a gap off the lineout and gains 10m.

This game is so hard to call, just when you think momentum has gone Leinster's way it swings back to Sarries.

Saracens are into Leinster's 22 now.

Cian Healy pumps his legs and are just two metres out now. But Liam Williams puts in a huge tackle on Garry Ringrose and Saracens get the turnover then clear their lines.

There are high fives all round for Sarries. That was so gutsy from Williams! Even the steely-faced Mark McCall can't help a fist pump.