Brisbane coach Chris Fagan has given his All Australian half-forward Charlie Cameron the challenge of beating the hard tag Richmond defender Dylan Grimes will apply in Saturday night's qualifying final.

The pair were joined at the hip when the two sides met in the Tigers' round 23 win at the MCG, where Grimes limited Cameron to just seven touches, and were together again a few nights after at the All Australian awards where both were recognized for their outstanding seasons.

Channel 7's cameras picked up some borderline tactics used by Grimes to prevent Cameron getting a clear run at the ball.

After the game, Fagan admitted he made a point of asking a few questions to the AFL's umpiring department as part of his regular feedback to them.

Fagan stressed there were other incidents from the game he addressed with the umpiring department that didn't involve Cameron.

"Included in that was a couple of the contests that Charlie was involved with," Fagan said.

"So yes we have asked the question about that but some other things as well.

"We think that probably Charlie needs to come up with a few more strategies to challenge Grimes and that's what we've been working on over the last two weeks.

"It's all about how Charlie goes about his work and how his teammates can help and all those sorts of things."

Cameron getting off the hard Grimes tag and hitting the scoreboard will go a long way to the Lions booking themselves a week off and a home preliminary final.

But with a defender as good as Grimes, it's easier said than done.