The Ulster reshuffle looks as though Nathan Doak has moved to full back with John Cooney at scrum half. Stewart Moore hasn't (yet) returned from his HIA with Wilhelm De Klerk at outside centre and Jude Postlethwaite moving to inside centre.

With 25 minutes gone, the team looks a lot different to what it did in the warm ups.

Andy Gray
BBC Sport NI

Ulster went for the six-two split on the bench and both of their replacement backs are on the pitch.

That's on top of losing Stuart McCloskey in the warm-up. That will force a bit of a reshuffle.

Best wishes to Michael Lowry, let's hope that's not as serious as it looks.

Image source, Getty Images

Some concern for Michael Lowry as he is down with a head knock. It looks as though his head caught Garry Ringrose's hip as he made a big hit in the build-up to the try.

Hopefully it is only precautionary but there are a lot of medics around the Ulster full-back as John Cooney is on. We wish him all the very best.

Ian Humphreys
Former Ulster fly-half Ian Humphreys on BBC Radio Foyle

It is important Ulster don't feel sorry for themselves that they have lost two of their starters. It is only 5-3 so it is important they play the way they have been playing and are careful in defence, everyone needs to be on the same page.

Ian Humphreys
Former Ulster fly-half Ian Humphreys on BBC Radio Foyle

Ulster are getting a lot of success by attacking the breakdown. I'm not sure if it is intentional but they are slowing it down and Leinster are not able to find the space in those outside channels.

Wilhelm De Klerk wasn't even in the matchday squad until 20 minutes before kick off but he's on in the centre as Stewart Moore exits for an HIA.

It looked dangerous for Ulster as Stewart Moore shot out of the line but missed his tackle on Robbie Henshaw.

However, as he tries to link up with Jamie Osborne, the ball goes forward and Ulster clear their lines.

Leinster win a scrum penalty this time just inside their own half and Ciaran Frawley's boot takes them to the Ulster 22.

Andy Gray
BBC Sport NI

That's the first points Leinster have conceded in their last 197 minutes on the pitch.

It may only be a penalty, but it's something.

Well deserved, too. Ulster have been bright.

Ulster's scrum dominates and wins a penalty. They go for the poles this time and Jack Murphy strokes it over.

It has been a brilliant opening 10 minutes for the visitors as Leinster concede for the first time in over two games.

Ulster win a penalty around 10 metres from the line straight in front of the posts. It would be a certain three points but Ulster opt for the scrum!

Ulster's kicking game has been spot on in the opening five minutes and Nathan Doak's kick into the 22 finds touch.

Ulster then steal the lineout and are on the attack!

Ian Humphreys
Former Ulster fly-half Ian Humphreys on BBC Radio Foyle

Very exciting first five minutes and very positive from Ulster.

An impressive kick into the corner from Stewart Moore doesn't find touch but forces Luke McGrath to play it. The scrum-half offloads to Ciaran Frawley and he finds touch, but Ulster have some good territory with a lineout on the 22.

We are underway at the Aviva Stadium with the men in white getting us going, kicking left to right!

Some breaking news for Ulster ahead of kick-off as key centre Stuart McCloskey has pulled up in the warm-up and Stewart Moore has come into the team.

Ulster fly-half Jack Murphy says that starting for the province and driving his side on is something he "relishes".

The 20-year-old has established himself at Ulster this year after arriving last summer from Leinster.

Murphy has started Ulster's past six games, scoring his first try against the Stormers last month, and he believes he is growing in confidence with regular game time.

"It's difficult coming in as a young guy, but the lads are really understanding with me, they want someone to drive them on and as an out-half that is your job and that is something I relish," he told BBC Sport NI.

"Getting a run of games has been massive for me, playing at that level in Bordeaux and in URC games, it's a higher level than what I have ever played so to get that experience is really good, and it has helped me grow as a player."

Murphy says that he is "settling in really well" to life in Belfast and is not fazed by being coached by his father Richie Murphy at the province, having worked with him in a professional capacity before.

"In the [Ireland] under-20s last year he was coaching so I got used to that then and it's not a thing really, he is strictly my coach when I'm in here."

The young fly-half is preparing for a return to his former side as Leinster host Ulster in the United Rugby Championship (URC).

Murphy says that it will be a "special" occasion but that his side are focused on picking up a win which will help them move a step closer to qualifying for the URC play-offs.

"There's loads of teams around eighth, and even down as far as 13th the points are really close, so we know picking up points is going to be vital over the next few weeks as it's really tight," he added.

"It's a good test for me and for the team to go against one of the best teams in the world."

Image source, Inpho

Leinster senior coach Jacques Nienaber says he is expecting a bit of "spice" in today's United Rugby Championship game with Ulster at the Aviva Stadium.

The URC leaders head into the match in top form after defeating Glasgow Warriors 52-0 in the quarter-finals of the Investec Champions Cup on Saturday.

After a difficult start to the season, Ulster have now won their last three URC matches in a row and have jumped up to sixth place in the table.

"I expect it to be a very hard and physical battle," said Nienaber, who was speaking before the Blues announced New Zealand centre Rieko Ioane would join Leinster next season.

"It's an interprovincial and there is a lot of pride and a lot at stake for the players.

"The two teams know each other and their strengths and weaknesses quite well so I expect it to be tight."

Leinster are set to be without injured Ireland trio James Ryan, Jack Conan and Ryan Baird for the game.

Leo Cullen's side have lost once in 20 matches this season in the URC and in Europe.

Their form has been so strong, the aggregate score of their last three European matches is a remarkable 142-0.

When asked if the games weren't competitive enough for Leinster, Nienaber said "it's a tough one to answer".

"The reality is when the opponent is in front of us, we can't change it, it is what it is," said the World Cup winning coach.

"For me making a comment that we aren't getting tested, what is that going to help? It is what it is and that is our mindset. We deal with it as best we can.

"Glasgow and Harlequins were tough, and we gave them a lot of respect as we will give to Ulster because they are quality sides and if you get it wrong they can put you away."

Image source, Inpho

Ulster lock Kieran Treadwell says he is "soaking up everything" in his last few months at the province.

Treadwell, who joined Ulster in 2016 from Harlequins, will return to his former side at the end of the season.

And the 29-year-old wants to savour his last few games in an Ulster jersey and inspire the province to a strong end to the season.

"You soak everything in, after Bordeaux I was like 'wow this is my last European game for Ulster,'" he told BBC Sport NI.

"I'm soaking up everything; the environment, the boys, the wins, the losses and the work we're doing on the training pitch."

Treadwell said that the mood in camp is "good" despite their 43-31 defeat against Bordeaux in the last-16 stage of the Investec Champions Cup last time out.

"We still have disappointment from Bordeaux, we felt like we actually could have put a few more shots together and scored a few more tries," he added.

"I think we are going in the right direction, stringing some good play together, and defensively we are making strides, so hopefully that can snowball into this week."

They face another tough assessment in the United Rugby Championship as they face Leinster at the Aviva Stadium, but Treadwell, who starts the game on the bench, believes his side should look forward to the challenge.

"It's a different challenge and they pose different threats, but it is going to be a massive game, these games leading in are really important as the table is really tight and it's effectively play-off rugby now," he continued.

"I'd say they're one of the best, but most of the focus this week is going to be on us and how we can learn from Bordeaux.

"It's an occasion in a massive stadium and something we can be excited for but that we can't let get the better of us."

Image source, Inpho