Samoan full-back Ahsee Tuala scored on his debut as Northampton Saints put Wasps to the sword to secure an LV= Cup semi-final spot.
Thanks to Leicester Tigers’ 43-9 win at Cardiff Blues, the Saints moved into the final four, with tries from Tuala, Phil Dowson, Jamie Elliott and Kahn Fotuali'i getting the job done.
Wasps responded through two Alex Lozowski penalties, but their failure to make first-half territory pay proved to be their downfall.
Northampton were far more ruthless, with Tuala, who arrived earlier in the week from New Zealand side Counties Manukau, getting them up and running after just eight minutes.
It means Jim Mallinder's side remain on course for an appearance in the final, which will be played at the Gardens in March.
Wasps had also been seeking to progress and they started well, with a scrum penalty giving Lozowski the chance to open the scoring with a penalty, which he did.
But Northampton were quick to respond with sharp work from Tom Stephenson teeing up Tuala for a try in the corner.
Sam Olver's conversion extended the lead, but Wasps were threatening with ball in hand and only a wasteful grubber kick from Tom Varndell stopped them claiming their first try.
The away side did add to their tally soon after, though, as Lozowski was given the chance to land his second penalty of the game.
But Olver quickly produced a response from in front of the opposite set of posts and Northampton were soon crashing over for a second score of the afternoon.
Skipper Dowson was the man to profit, with the Saints heading into half-time at 17-6 up.
And they weren't about to relent after the interval as Fotuali'i's expertly-executed chip ahead found Elliott, who darted in to score.
Wasps were struggling for a response, knowing they were heading out of the LV= Cup.
In contrast, Northampton were cruising, searching for a bonus-point score, and they didn't have to wait too long for it.
After Dom Waldouck was stopped just short of the line, Fotuali'i picked up to dive over.
Olver's conversion made it 29-6 and the game was then finished as a contest, with both sides struggling to find any fluency.
And it was left for Northampton to see it out and ensure a sizeable win and a semi-final spot, now just one game away from securing their second LV= Cup final in two seasons.
Tickets for this year's LV= Cup Final on 22 March at Franklin's Gardens are now on sale. Click here to snap one up from just £20 for adults, £10 for juniors to see who will win the first silverware of the season.