Northampton boss Jim Mallinder insists his side are not yet at their best despite making it five wins out of five in the Premiership with a 24-6 win over Wasps.
Two tries from James Wilson and 14 points from Stephen Myler's set up the win that moved Saints to the top of the table.
"It is pleasing to win five out of five, but I don't think we have really reached top gear. There is still a little bit more to come from us," said Mallinder.
"We defended well to keep them out, but attacking-wise we could sharpen up in a few areas. If we can do that then I am sure we can put some teams to the sword.
"We probably wasted a couple of chances there. I would have loved a bonus point, but overall I am happy with the win."
Wasps director of rugby Dai Young revealed wing James Bailey was taken to hospital with a suspected broken leg after being carried off on a stretcher.
Prop Tim Payne was sin-binned on his 250th appearance for the club, and Young added: "We will have a good look at it. That is what they are there for. If that is a yellow card offence you are going to take it."