Leinster head coach Leo Cullen admits he briefly wondered whether his side were heading towards another afternoon of disappointment, before they went on to hammer a dreadful Glasgow Warriors side in the United Rugby Championship quarter-final.

For the first 15 minutes of their 76-14 win against the Scottish side, Leinster were showing all the signs of a team that hadn't parked the frustrations of last Saturday's Heineken Champions Cup final defeat to La Rochelle.

Trailing 7-0 to an early Zander Fagerson try, the URC top-seeds looked off in every facet of their game, but after Richie Gray's yellow-card for a dangerous clearout on Jamison Gibson-Park, Leinster ran in three quick tries which killed off any chance of an upset at the RDS.

"I'm always worried, all the time," laughed Cullen, when asked if he was fearing the worst in that opening quarter of an hour.

"We were pleased with how we managed the yellow card period, to score three tries is a huge boost for us. How we started the second half as well, we took the game away from them quite quickly which is pleasing. All the bench guys added good impact, which is so, so important now."

The quarter-final procession sets up an exciting semi-final against the Bulls on Friday night at the RDS, after Jake White's side were 30-27 winners against the Sharks in a nail-biting game in Pretoria this afternoon.

And Cullen has called for his players to embrace the final weeks of their season.

"It's really just getting through to the next round, there's no extra points for scoring more tries in these games. It's on to the next challenge which is the Bulls, which will be significant. It's about enjoying the week, that's the big thing from my point of view, for the guys to enjoy another week together.

"You see it now with teams who are finished, the season is over, and the groups are never together again in that form. There's always 'X' amount of movement in playing squads, that's just the way it is. It's about enjoying the time together, and hopefully we can push each other on in terms of delivering a performance next Friday."

While the Glasgow challenge was abysmal, particularly in the final 20 minutes, Leinster were unrelenting in attack, doing their best to flush any last bits of Champions Cup frustration out of their system.

And although Cullen admits there isn't a huge amount they can draw from the second half, he says their ruthlessness will certainly do their confidence good.

"Yeah, that's what you need to be in the modern game, isn't it?" he added.

"It's just nailing every opportunity that comes along as best as you possibly can, and if you miss out on an opportunity you're not letting that drag around with you, it's just moving on to the next challenge, the next moment in the game.

"So yeah, overall I thought the guys did that pretty well today.

"That fight and scramble is good, and that's what you need in these play-off games."

The head coach namechecked Jordan Larmour for praise, after another electric performance from the winger.

The 24-year-old picked up a second consecutive Player of the Match award, scoring two tries and setting up another pair of scores, in a pointed performance after being left out of the squad a week ago.

"It was nice to see Jordan get man of the match, he was unlucky to miss out on selection last week, great to see him go well because he was excellent in that Munster game. It was a hard call, him missing out last week, but it had been his first game in a while, and the magnitude of the game, so it was good to see him go well.

"Now it's trying to keep it going, we'll enjoy the week, preparing, working hard for each other and see how everyone comes through the game. There will be a lot of close calls again which is what you want.

"It's unfortunate for some guys that they will miss out. For the guys who do get the chance to represent the team, hopefully they go well."