Stephen Myler says Saints’ double success against Harlequins will count for nothing in Friday’s Amlin Challenge Cup semi-final at Franklin’s Gardens.
Jim Mallinder’s men came out in top in the Aviva Premiership meeting at The Stoop back in September and again in the game at the Gardens in January.
But with a final spot up for grabs, Myler knows this week’s game will have a very different feeling about it.
He said: “We know what they’re capable of. They’ve got quality internationals, who’ve played well for the majority of the season.
“We’ve had the better of results against them this season, but we know Friday’s a different entity and we’ve got to be at our best to get the right result.”
Harlequins are set to name a strong side for the game, with the likes of Mike Brown and Danny Care likely to pose a big threat to Saints’ chances of making the Cardiff showpiece.
And Myler is well aware of the dangermen in the opposition ranks.
“Mike Brown had a fantastic Six Nations and Danny Care as well,” he said.
“You look at the players they’ve got in their team, with the likes of Nick Easter as well and across the backline, and we know we need to be at our best to beat them.”