Catalans Dragons coach Kevin Walters has accused Friday's play-off opponents Huddersfield Giants of "wrestle-mania".
Walters has slammed the tactics of the Giants by suggesting they seek to claim an unfair advantage by using wrestling techniques to delay the play-the-ball.
"Our biggest problem will be not the flights but overcoming the wrestling tactics of Huddersfield," he said.
Walters says he has raised the issue with referees chief Stuart Cummings ahead of the preliminary semi-final.
"I've spoken to Mr Cummings about it," said Walters.
"We've got some great attacking players in our team and so have Huddersfield and it would be a shame if those skills weren't to be displayed because of the wrestling tactics of Huddersfield.
"We're all trying to play the game as best we can, in the right spirit of the game, and sometimes I suppose it gets caught up a little bit in not so much over-stepping the rules but trying to get an advantage from the rules.
"We try to slow the game down as well, I'm not saying we're not part of that, but we play within the rules.
"I just hope it's policed properly at the weekend. Steve Ganson's a very experienced referee.
"I'll speak to my guys as well. We don't want to see a wrestle-mania here, we just want a good open game of football. We'll play within the rules providing that Huddersfield do."
The winners of Friday's first preliminary semi-final will be 80 minutes away from a maiden Grand Final appearance.
The winner will face either Leeds or St Helens in the next semi-final.