Scarlets are awarded a penalty and Halfpenny will kick for goal

Steff Evans breaks over halfway and he is taken high by Scott Fardy

The scrum is reset

Tadhg Beirne gets his paws in over the ball and Scarlets are awarded a turnover on halfway.

Jonathan Sexton sets up an attacking lineout at halfway and the hosts look to maul

Good work from the Leinster pack and the are awarded a penalty

Dan Jones gets the game underway

This is leinsters to lose. But the Leinster back 3 are very vulnerable at this level

Hello and welcome to Ultimate Rugby's European Champions Cup coverage where Leinster take on Scarlets in the semi-final of the event. Leinster are the only side with a perfect winning record in this season's Champions Cup and could become just the second team after Saracens in 2015/16 to win every match in a campaign. Leinster did go unbeaten during their 2011/12 title success with eight wins and a draw. The Scarlets have reached this stage of the Champions Cup for the first time since 2006/07 and for the fourth time overall but they have yet to progress to the final. It should be an enthralling encounter. Join me for kick off in 10 minutes along with live updates and coverage throughout the game.

Would have liked to see Deegan in the game 23 today.