Just two goals a week stand between St Kilda and the certainty of AFL finals football.
That's the leak in defence the Saints need to block up to secure themselves a top eight spot in the countdown to September.
Saints tagger Sean Dempster believes that the small adjustment week-in week-out over the next five rounds will make the side a contender.
He says if the improvement continues St Kilda will be able to match in-form Collingwood at the MCG next Saturday night.
"I don't know if they have too many weaknesses but I know the way we move the ball and our attack is going to hold us in good stead," Dempster said on Monday.
"Our defence has been slowly getting better over the year.
"The first half of the year it wasn't great ... our offence has been pretty steady, it's really our defence that we need to lock down on and improve that little bit.
"It's not a lot, it's one or two goals a week and if we can do that over the next five weeks it's going to hold us in good stead to hopefully play some finals football."
Dempster described beating the Magpies as "a big ask".
"They're one of the form sides in the competition at the moment but if we play our game and we give a supreme effort we're in with a chance."
He said noticeable improvement in the form of captain Nick Riewoldt was due to the fact the big forward had been injury-free.
"I think it's got a lot to do with his body," Dempster said.
"He's been able to get on the track a lot more this year than he has over the last couple of seasons.
"He's got a massive workrate so his body has probably got a lot to do with how his form is going," he said.