Luther Burrell believes Harlequins will be a much tougher nut to crack than they were in September when they head to Franklin’s Gardens on Friday night (kick-off 7.45pm).
Saints claimed a 13-6 win at The Stoop earlier in the season, with James Wilson’s try helping them see off Quins in soggy conditions.
That result played its part in a slow start to the season for Conor O’Shea’s men, who won just two of their first seven games in all competitions.
But the 2012 champions have rediscovered their form in recent weeks, claiming victory in five of their last six matches, including two impressive Heineken Cup successes against Racing Metro.
And Burrell, who helped Saints beat Bath 43-25 at the Gardens last Saturday, knows his team face the most difficult of tests this week.
“As a team, we’re moving in the right direction,” he said. “We’ve got a very good Harlequins side coming down on Friday, so it’s been about looking at ourselves this week.
“We didn’t go mad, we celebrated the Bath win, but we can’t do anything out of our system.
“Harlequins are on a good run at the moment, they’ve found their form and they’re not going to be the team we beat early on in the season so we’re going to have to be on our game.”