Northampton lock Courtney Lawes believes Saturday's clash with Harlequins at the Stoop will pose a serious test for the Saints.
Both teams claimed victories in the opening round, but in very different circumstances. Saints outclassed Exeter Chiefs 38-11, while Harlequins fought their way to a one point win over Wasps.
Both Northampton and Quins are expected to be competing for semi-final berths at the business end of the season, and Lawes expects Conor O'Shea's men to be a tough challenge in front of their home fans for the first time this season.
"There's no team in the Prem who are walkovers so you've got to be prepared for a battle every weekend and the next one is certainly no different," Lawes told the Northamptonshire Telegraph.
"They're going to be tough and we'll have to dig in but we've got good camaraderie at the minute and I'm sure we'll able pull through."
The confidence levels in the Saints ranks have been boosted by some high profile signings, such as George North and Alex Corbisiero.
"We've had a lot of big signings, some really crucial players come in and players like big Samu (Manoa) who are still on good form from last year," added Lawes.
"We've also got players coming back into form and injuries so there's a good feeling at the moment.
"The competition for places is fantastic. It's going to make you a better player, it makes everyone better and it is what you need."