Scotland must be ready for an early onslaught if they are to survive Sunday's RBS 6 Nations battle with Ireland, wing Tim Visser has warned.
The Dark Blues welcome Declan Kidney`s team to Murrayfield looking to end a run of five straight defeats on home soil to the Irish.
But Edinburgh back Visser has warned the visitors - still hurting after their 12-6 defeat to England a fortnight ago - will throw everything at their hosts in the early stages.
He said: "Ireland will be very physical. The first 20 minutes will be hell on earth.
"They are going to unleash everything they have against us. If we can ride out that first 20 minutes then we are in with a chance. It's very important we get off to a good start."
The Ireland side that runs out in the Scottish capital will, however, bear little resemblance to the team which pushed England close in Dublin.
Kidney has made five changes to his starting line-up as a result of injury and suspension but Visser insists the quality of Scotland`s opposition will remain high.
He said: "Whatever Ireland side is going to be out there, it will be full of passion.
"Traditionally, they like Murrayfield. They like coming over here. They are a good team, no matter who plays, so we are not looking at it like a weakened side is facing us."
Visser has been a key component of a Dark Blue attack that leads the way in terms of championship tries so far.
The Scots notched up two touchdowns in their opening-day defeat to England before running in another four in their 34-10 success over Italy last time out.
But both games gave cause for concern at the breakdown as Scotland struggled to develop quick ball to their pacy runners.
Now Visser has urged his team-mates to stiffen their resolve in the tackle if they are to mount a credible challenge to the Six Nations title.
The Dutch-born player, who has along with fellow wing Sean Maitland and full-back Stuart Hogg contributed four tries as part of a potent back three, said: "It's a vast improvement from where we have been in the past in terms of finishing.
"It's good to see that right across the back three but it is perhaps disguising where we are as a team.
"We need to look at the fundamentals of our game. We need to look at the tackle contests, our defence, our breakdown. Those are all important areas we need to improve on.
"We are making up for that by scoring tries, which is never a bad thing, but to become a more better side we need to look at those fundamentals.
"But the Italy performance was a good first step. We scored a lot of tries and the scoreboard looked brilliant.
"However, against some of the other teams in the Six Nations, we will get it a lot tougher and if we don't get these fundamentals right, we won't be able to score those tries."
Live RBS 6 Nations coverage on RTÉ Two from 2pm on Saturday 23 February and 1.15pm on Sunday 24 February (Scotland v Ireland). Live streaming Ireland only.
Live radio coverage of Scotland v Ireland on Sunday Sport on RTÉ Radio 1 from 1.50pm. Live streaming available worldwide.