LEINSTER won on points to knock out Glasgow — after delivering haymaker after haymaker to leave a second successive opponent dazed on a blank canvas. Jordie Barrett was pound-for-pound the best man on the field as Leo Cullen’s men booked an Aviva Stadium Champions Cup semi-final against either Northampton or Castres with a resounding eight-try victory at the same venue. And, staggeringly, they have punched through the first two rounds of European knockout rugby without giving up a single point having beaten Harlequins 62-0 last Saturday. It was ‘only’ 52 here in what was a near-perfect performance. All Black Barrett was sensational but so were so many of his colleagues in a game where four of the backline got on the scoresheet. Max Deegan, Tommy O’Brien, James Lowe and Hugo Keenan all went over in the first half while a penalty try also contributed to a 33-0 interval advantage for Cullen’s side. Garry Ringrose, Dan Sheehan and Deegan again put Glasgow out of their misery. The only downside for Leinster on the pitch was an early injury to Jack Conan, while the only disappointment off it was that there were not more people in attendance to see it. Having a long lead-in to last week’s Quins clash meant there were 55,627 in Croke Park — but a six-day turnaround for the quarters did not do the ticket office any favours. Still, 22,400 was a decent crowd in the circumstances, but it might have been so much more to see a Champions Cup encounter against the second-best team in the URC. The URC table may not lie but also it does not give a fair reflection of the gap between these sides when Leinster hit top form. Those who did attend the Aviva were treated to Leinster delivering the type of attacking performance that gets most bums off seats. And not only is Tyler Bleyendaal’s attack purring, having put up a whopping 114 points in the last week, but so is Jacques Nienaber’s defence who are forgetting what it is like to ship a score. It got to the stage in the second half that you began to wonder could Leinster better the 62 points scored against Harlequins. But they were equally determined that Glasgow, like Quins, left Dublin with zero points. This win was achieved with a stunning all-round performance. The whole backline was on top form with Sam Prendergast exceptional as he nailed five of his six kicks. But even he was overshadowed by Barrett who seemed to do everything. Whether it was tackling Glasgow men five metres behind the gainline, making Warriors miss with nifty footwork, kicking himself or passing perfectly, he was doing it all. There was one early moment when Leinster looked like they could be in trouble when O’Brien’s kick was blocked by Kyle Rowe who sprinted forward after his own grubber. It was a straight race between the Glasgow full-back and Leinster’s Kiwi centre. A fair fight most of the time but not when the Leinster man is the All Black great who not only retrieved before it crossed the try-line but then evaded Rowe’s tackle and booted 80 metres. Glasgow could only kick to touch as Barrett’s intervention turned a potential visitors’ try into Leinster possession deep in opposition territory. Indeed, the only thing that he could not do on the night was score himself, with an early try chalked off for a Ringrose knock-on on 11 minutes. RUNNING RIOT The opening try on 13 minutes was one where Glasgow just found Leinster too hot to handle. It actually started off the scrum given for the Ringrose knock-on as the Scots passed their way into trouble and gave away a cheap lineout just outside their 22. Barrett drew the tackles and found O’Brien again and he flicked wide to Deegan to ground. There was another big turning point moments later when Adam Hastings was sent to the sin-bin for a deliberate knock-on when cutting out a Rónan Kelleher pass to Ringrose. By the time Hastings came back on, that seven-point deficit had increased to 26 as Leinster took control. The first seven were from the penalty try as Luke Pearce generously decided that Ringrose would have scored — there was Glasgow cover — had Hastings not stopped the ball reaching him. Try No  3 on 26 minutes was scored when Lowe touched down in the left corner from a long looping pass by Jamison Gibson-Park off a scrum. But how that scrum was won was a delight as Prendergast ran from inside his own 22 and then chased his own grubber kick that Rowe had to ground behind his own end line. The fourth try came on the half-hour as flying wing O’Brien got to show his pace when fed by Keenan to slalom in despite the efforts of Kyle Steyn and Stafford McDowall. And even after Hastings returned, a fifth try arrived on 35 minutes when Keenan grounded a lovely Prendergast grubber that took the entire Glasgow defence out of the game. If Glasgow had any ambitions of an unlikely comeback from 33 points down, that resistance was undone seven minutes into the second half through Ringrose. He showed good footwork and then brute force as he put the ball down despite three Glasgow men all getting a hand on him as he powered through. Substitute Sheehan added Leinster’s seventh after 58 minutes when he touched down from a Josh van der Flier pass after a good maul worked off a lineout. And as the game petered out, Deegan notched up another try to add to the one he had scored to kick off the rout. SCORERS — Leinster: Tries, M Deegan 2, J Lowe, T O’Brien, H Keenan, G Ringrose, D Sheehan, penalty try; cons, S Prendergast 5.