Leinster's restart goes deep into Ulster's half and Aidan Morgan clears.

Leinster now have good territory and will look to launch an attack from the lineout.

A powerful carry from Jack Conan brings the visitors up to the 22.

Nathan Doak is accurate with the penalty and Ulster edge ahead.

Really patient build-up from Ulster.

Leinster are pinged for a penalty at the breakdown and Ulster point to the posts.

Leinster steal the lineout but fumble the ball and Luke McGrath is forced to clear under pressure.

Ulster have another attempt at the lineout.

Richie Murphy's men now going through the phases close to the visitor's line.

Ulster struggling in the scrum and they concede a penalty.

However, they manage to turn the ball over with good work at the breakdown.

Penalty to Ulster and Aidan Morgan makes good distance as he kicks to the corner.

Will Connors exits and it looks like it is game over for the flanker.

Scott Penny replaces him.

Leinster weren't behind long in this one.

Watch Luke McGrath tie things up off a dominant scrum from Leo Cullen's men.

Ulster going through the phases now but a knock on from prop Eric O'Sullivan stops them in their tracks.

Momentum lost as the teams set up for another scrum.

Leinster have the put-in but Will Connors still receiving some treatment.

Ulster win a scrum penalty.

Relief for Ulster.

They send the ball just inside Leinster's 22 and Ulster have the throw.

It's a good attacking platform if they can win their own lineout

Ross Byrne with a massive up-and-under.

Ulster compete for the ball in the air but the ball is knocked forward by an Ulster hand.

Scrum to Leinster.

Ulster have struggled at the scrum - can they gain parity?

Jonathan Bradley
BBC Sport NI

Some player to have running the water on for Leinster tonight...All Black Jordie Barrett pitching in during his first week in blue.

Image source, Inpho

Ulster win a penalty and choose to go to the corner.

Penalty against Ulster from the resulting maul for obstruction.

A soft penalty from Ulster and an opportunity wasted.

What a break from Nathan Doak.

The scrum half spots a gap at the side of a ruck and makes significant yards.

Ulster now on the front foot and putting pressure on Leinster in their 22.

Can they capitalise?

Ross Byrne slots a tricky penalty to level the sides.

There's a mix-up from Leinster in midfield and they spill the ball.

Prop Jack Boyle leaves the field for a HIA and Michael Milne replaces him.

Ulster have the scrum but concede a penalty.

Frustrating for Ulster as Leinster point to the posts.

Nathan Doak is accurate from the kicking tee to give his side the lead.

Referee Eoghan Cross shows a yellow card to Leinster second row Brian Deeny.

He is deemed to have made a high tackle on Ulster's Aidan Morgan, but there is sufficient mitigation to reduce it to a yellow.

Leinster down to 14 men for the next 10 minutes.

It's been a frantic start to this one!

Here's how Ben Carson gave Ulster an early lead in Belfast.

Penalty to Leinster.

The visitors turn down a shot at goal and choose a scrum.

What a statement of intent from Leo Cullen's side.