Melbourne Storm back-rower Ryan Hoffman.

Hoffman supports crackdown on foul play

Storm veteran Ryan Hoffman is backing the NRL rule tweak that gives added power to referees to sin-bin players for foul play.

Hoffman said the move highlights the importance of players keeping their emotions under control at all times.

The rule change comes as Storm centre Curtis Scott returns after receiving two weeks' suspension for punching Manly's Dylan Walker.

"We need to protect our ball players," Hoffman said.

"It isn't a good look - it's not a brave action when you smack someone on the back once they've already passed the ball.

"The referees haven't been shy in using the sin-bin this year. I think it's just going to put players on notice, as you've seen how much it can affect a team being one man short for 10 minutes. It's up to us to be a lot more disciplined."

Scott watched from the sidelines as the Sea Eagles powered home against the Storm on the night Scott was sent-off and has been training strongly in preparation for his return against the Knights on Sunday. 

"Poor old Curtis - he had two weeks, but it ended up being about a month with the byes," Hoffman said.

"He's been itching to come back and training very hard. We're excited about what he can do for us."

In other team news, Will Chambers also returns from suspension after a dangerous contact charge for Queensland in the Holden State of Origin series opener and fullback Billy Slater takes back his No.1 jersey after recovering from a hamstring injury.

"I think Will has something to prove in this game against Newy, coming back," Hoffman said.

"And I know Bill was disappointed to miss the Broncos game on Friday night. To have him back is really helpful."

Hoffman praised the Storm's Origin players for how they backed up in the win over Brisbane on Sunday.

"It was sort of a coming of age game for Felise [Kaufusi], for the fact that backing up after Origin - it's all well and good playing that Origin game, but true Origin players back up for their club every weekend.

"I think you saw that from all our players - [Cameron] Munster and Joshy [Addo-Carr], they backed up. That's what you expect."

Sunday's meeting between the Knights and Storm is their second of the year, with Melbourne prevailing 40-14 in round six.