Paul Grayson has warned Saints that strugglers London Irish will be ‘desperate’ to turn them over on Saturday.
The men from the Madejski Stadium have won just once in the Premiership this season, against Bath two weeks ago.
They currently sit second-from-bottom in the standings, with just four points to their name.
In contrast, Saints have already accrued 22 points after winning all of their five games and they currently sit top of the table.
But Grayson knows Irish will be eager to upset the odds on Saturday and he wants his side to get their heads right as they bid to maintain their 100 per cent record.
“They’ve got a lot of dangerous players and they’ll be desperate to get another win on the board and start moving up the league,” he said.
“We have to be mindful of those threats but we’ll concentrate on what we can control and go down there in the right frame of mind to give a good account of ourselves.
“As soon as you drop off, they don’t care what we’ve done in the last five weeks, they’ll be flat out.
“If we’re off, we’ll be in trouble – and that’s how we approach every week.”
Saints claimed a 24-6 victory last time out, against Wasps at Franklin’s Gardens last Friday night.
But Grayson has urged them to keep improving as they bid to go into the Heineken Cup, which starts on October 14 with a home game against Glasgow Warriors, unscathed.
“We’re pleased with the start,” he said. “But we’re hyper-critical of ourselves because we’re well aware those (opening five) games could have got away from us.
“The league table could easily look a lot different but we’re five from five and pushing on.”