Leeds coach Brian McDermott admits his side will get beaten by the Melbourne Storm in the World Club Challenge later this month if they don't improve quickly.
The Rhinos began the defence of their Super League crown with a 16-12 victory at Warrington on Thursday night and have one more league fixture - at home to Hull KR next Thursday - before flying to Melbourne to take on the NRL champions in the annual world title decider on February 16.
"I don't think Melbourne will be shaking in their boots looking at that," McDermott said.
"It's no secret that we're going to have to go to Melbourne and do something a little bit more, something different. I'm not going to do that in the first two rounds of Super League.
"We're going to have to hit Melbourne with something that they've never been hit with before and sustain that. There is no training for that. We just parachute ourselves in there for a week, go try and do it and get back out again.
News that makes sense
Your trusted source for staying up-to-date with the world around you. Get free daily news updates and analysis, straight to your inbox.
"But what I don't want to do is get to Melbourne and have to explain away two awkward performances in Super League. So I want to get through these ... and then board the plane towards Melbourne with not too many concerns about Super League."
Leeds agreed to forgo home advantage in an effort to keep the World Club Challenge alive after Melbourne showed little interest in travelling to England for the fixture, which has been on the calendar off and on since 1987..
The match at AAMI Park will be only the second to be held Down Under in the last 19 years.
