Damien Hardwick has challenged his Richmond charges to get ill-discipline and poor free kicks out of their game after cheap giveaways proved costly in their 33-point loss to St Kilda.

Richmond lost the free kick count 19-28 and both Marlion Pickett and Shai Bolton gave away costly 50-metre penalties at crucial times during Sunday evening's game.

The Tigers had led by 25 midway through the third quarter before St Kilda booted a run of 10 consecutive goals and now sit at 1-2 after three rounds.

"It's disappointing and (especially) the cheapness of some of the free kicks," Hardwick said.

"Just discipline and just too high and the stoppage free kicks hurt us once again.

"We've got to get better. We've spoken about that all year, about trying to eradicate that from our game, but it creeps in at critical stages and it's really, really costly.

"Like you can't defend from a free kick, you can't put pressure on, they get a free disposal. So we've got to get better on that front."

The Tigers will await the result of scans on co-captain Dylan Grimes, who was substituted after a third-quarter hamstring injury.

"It's obviously a hamstring and that's disappointing," Hardwick said.

"So he'll miss some time. What that is, we're not too sure."