MICHAEL Voss said there was no hope of teaching an old Lion new tricks after Jonathan Brown's horrendous collision against Geelong on Sunday.

After seeing his captain stretchered off in the third quarter incident, the Lions' coach joked that Brown had to realise he wasn't as young as he once was.

The fearless Lions captain ran head-first into the oncoming Harry Taylor and Mitch Clark to attempt a mark and was left prone on the ground when all three and Tom Lonergan collided in a sickening incident.

It is the second time this season Brown has been taken off the Gabba after horrific accidents, following a round one collision with Fremantle's Luke McPharlin that cost him six matches out with facial fractures.

Brown's initial x-rays cleared him of any fractures this time though.

"Someone's got to tell him he's not 21 any more," Voss said.

"He's unbelievable. When you're led by that bloke it's no wonder the guys want to come to the well. He's unbelievably courageous."

Brown has made his name on his fearless attack on the ball, and Voss said that would never change.

"It's hard for a coach to tell someone instead of going 120 per cent, go 110," Voss said.

"He's just a competitor and that's what you live with. As soon as you self doubt that that's when you're gone and he'll never be like that. He's always maintained that character and that's why he leads from the front."

Voss said at this stage Clark's injury was a "corkie" until he had further scans.

The Lions coach was pleased with three quarters of Sunday's loss, before Geelong piled on seven goals to two in the last quarter.

"They started winning the ball and we couldn't get it back off them and that's what good sides do, they maintain it for that period of time," he said.

"We thought this would be a fair benchmark game for us and I think we got a fair indication on that. There's some genuine things to like. The next level is being able to maintain that intensity for 120 minutes and that's the consistency you need to beat a side that calibre."

Voss did not spare defender Mat Maguire, who had eight goals kicked on him by James Podsiadly.

"Goose (Maguire) is going to have to live with it, he had an absolute horror game, he had a shocker," Voss said.

"Everyone's been at that point where you have an absolute horror. You're more admired when you bounce back and we need him to bounce back.

"That's going to be one he'll read in the paper and be one that's talked about all week, but the fact is he had a shocker."

Michael Whiting covers Brisbane Lions news for afl.com.au. Follow him on Twitter: @mike_whiting