IT'S NOT hard to see where Luke Parker gets his toughness from. The young Sydney Swan came through an unusual fitness test at the family home last week, conducted by his dad's fist.

Recuperating from a fractured jaw suffered in round one against Greater Western Sydney, Parker was at his home in Melbourne when his father, Wayne, jokingly smacked him on the jaw.

As a result, Luke is set to hold his place in the side to take on Fremantle at the SCG on Saturday.

"We expect Parker to play," coach John Longmire told reporters ahead of training on Thursday.

"He essentially did a fitness test with his dad last week.

"He went home for the weekend and his dad planted one on his chin and his dad gave him the all clear.

"I think it was just a muck around and his dad asked him how he was going. He said 'pretty well' and I think his dad just wanted to make sure he was OK.

"It probably isn't any wonder Luke goes for the ball the way he does."

While the Swans had last weekend off, Fremantle defeated reigning premier Geelong in a hard-fought, and sometimes feisty, encounter at Patersons Stadium.

The match resulted in the suspensions of Freo small forward Hayden Ballantyne and Cat Matthew Scarlett.

But Longmire didn't need any reminding that discipline should be a key focus of his side this week, even if renowned antagonist Ballantyne isn't playing.

The two sides met at the SCG in round 17 last year when Fremantle got off to a fast start before some poor decisions by the Swans helped seal their downfall, losing by 11 points.

"(Ballantyne) is a great little player. He's a really good player," Longmire said.

"If you take out all the discussion from this week, he's just a good player.

"They've got some good depth, but we just need to be really disciplined.

"Last time we gave them eight free kick goals against and we got beaten by 11 points.

"We need to make sure we give a strong performance this week, but a disciplined performance."

It was a sentiment echoed by veteran midfielder Jude Bolton, who said players needed to remember some of the first things they were taught in the game.

"Geelong is normally quite unflappable and (Fremantle) can niggle and things at times," he said.

"You just want to make sure the ball is the focus and go from there. You just don't want to release the pressure valve at all.

"You're taught even as a young player to not get sucked in. You have to just focus on the footy and go after it."

James Dampney covers Sydney AFL news for AFL.com.au. Follow him on Twitter: @AFL_JD

Luke Parker is a $244,200 midfielder in Toyota AFL Dream Team. Register your team here