Leinster moved clear at the top of Pool 1 in the Champions Cup courtesy of a 43-16 win over Northampton Saints at Franklin’s Gardens on Saturday.
As the scoreline suggests, Leinster were full value for their win and they outscored the home side by seven tries to one.
James Lowe, Rhys Ruddock, Andrew Porter, Cian Healy, Ross Byrne, Luke McGrath and Ed Byrne crossed the whitewash for the Irish province while Johnny Sexton and Ross Byrne succeeded with a brace of conversions apiece.
For Northampton, who were trailing 19-16 at half-time, Ahsee Tuala scored a try and their other points came via the boot of Dan Biggar, who added a conversion and three penalties.
Johnny Sexton’s second-half injury cast a shadow over Leinster’s win, however. The Ireland fly-half went off four minutes into the second half with what appeared to be a right knee problem.
But with Jordan Larmour in sparkling form Leinster absorbed the loss of Sexton to run out comfortable winners.
Northampton’s first meaningful test in pursuit of a quarter-final spot ended in a defeat that places them under pressure for the return fixture in Dublin next weekend.
The Premiership leaders had been superb until colliding with Leinster, catching the eye with an attacking style that was matched by results in the form of six wins from seven outings.
But they were taught a lesson in European rugby by the four-time champions who fielded greater firepower in most departments and who were able to call on a watertight defence to contain Northampton’s assault in the final half-hour.
A seventh win in eight meetings between the rivals places Leinster in full control of the pool.
It took only 131 seconds for Leinster to draw first blood as they pounced on a Northampton mistake in midfield with full-back Larmour tearing downfield before sending Lowe over.
Clean line-out ball enabled Saints to respond as Tuala and Teimana Harrison made big carries through the middle and, when the move swept left, quick hands ended with Tuala diving over in the right corner.
Larmour’s scorching start continued as he took Sexton’s clever inside ball and stepped his way into space, offering scrum-half Jamison Gibson-Park sight of the line only for Cobus Reinach to capitalise on a moment’s hesitation with a covering tackle.
Leinster were not to be denied however and, after several surges, Ruddock forced his way over.
Biggar’s accuracy from the kicking tee, combined with his cunning break-up field, helped Northampton regain the lead against the run of play – but they were unable to score again.
After a bright spell from Saints, when they profited from being more direct, Leinster built pressure once more and their power from close range was irresistible as prop Porter burrowed a path through the home pack.
ALL OVER! A HUGE WIN. A try from Ed Byrne as the clock hits red, converted by Ross, sees out a massive win at Franklin's Gardens. We'll see you next week at Aviva Stadium as we do it all again. #NORvLEI #JoinTheRoar pic.twitter.com/cPdZ5TfyrM
— Leinster Rugby (@leinsterrugby) December 7, 2019
The second-half opened with another searing run from Larmour and his injection of pace was the prelude to waves of forward carries that ended when Healy touched down.
It was the worst possible start to the second-half for Saints and they were in danger of being blown away as the European heavyweights immediately renewed their attack through Garry Ringrose and Robbie Henshaw.
This time Ross Byrne was on hand to finish and to compound home misery co-captain Alex Waller was sent to the sin-bin for a shove from behind moments before the try was scored.
Sexton’s exit failed to affect Irish momentum but a setback did arrive in the form of a yellow card for Ringrose for his tip-tackle on Biggar, who had recovered from a toe injury to take his place at fly-half.
Leinster’s defence held firm as Northampton cranked up the intensity but a series of handling errors at key moments proved costly, while even giant wing Taqele Naiyaravoro was unable to make any impression.
Ireland lock James Ryan limped off but it made no odds as additional blows were landed when replacements McGrath and Ed Byrne touched down.
In the other early game, Lyon got their campaign on track when they notched a deserved 28-0 bonus-point victory against Benetton at the Matmut Stadium de Gerland.
Jean-Marcellin Buttin, Charlie Ngatai, Xavier Mignot and Liam Gill crossed for Lyon’s tries and their other points were scored by Jonathan Wisniewski, who slotted a conversion and a penalty, and Patricio Fernandez, who also succeeded with a three-pointer off the kicking tee.