Fremantle coach Mark Harvey reckons Adelaide's Patrick Dangerfield was "lucky" not to get nailed by young Docker Stephen Hill last week.

Dangerfield twice burnt off a chasing Hill during the Dockers' 25-point AFL triumph at AAMI Stadium on Saturday, with one of the penetrating runs leading to a classic goal.

Hill is considered one of the fastest players in the competition and Dangerfield's ability to keep the Fremantle speedster at bay surprised many.

But Harvey said Dangerfield would have been nailed had a fatigued Hill not done a mountain of work before both chases.

"Well I'm going to tell you something, Dangerfield's lucky because Stephen had done a lot of work prior to both of those chases," Harvey said.

"And if he had have been a little bit fresher he would have got him, he would have nailed him."

The Dockers will aim to make it three wins from four starts when they take on struggling North Melbourne at Patersons Stadium on Sunday.

But Harvey said his team couldn't afford to take the win-less Kangaroos lightly.

"If you're complacent in this game you'll get beat, that's reality," Harvey said.

Dockers ruckman Aaron Sandilands, who was accidentally poked in the eye by Adelaide's Richard Tambling on Saturday, has been cleared of any serious damage and is set to play against North Melbourne.

"I'd say he'll be training later in the week in our main session. Everything appears to be OK at this stage," Harvey said.

Fremantle's Ryan Crowley will notch his 100th AFL appearance against the Kangaroos and Harvey paid tribute to the tagger-come-forward.

"Eighty per cent of his jobs have been for the team. You always embrace those types of players," Harvey told Fairfax radio.

"He's always in there and in the face of the opposition. He brings a different chemistry to our team."

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