Coach John Longmire has overseen 12 wins from 14 matches over the past three and a half months, the only blemishes a pair of losses to Hawthorn.

But the Adelaide Oval battle with the free-flowing Crows is by far the toughest challenge of the season, pitting Sydney's rigid defence against the competition's highest-octane team.

Longmire's week started well with the injury to Nic Newman's knee in Saturday's triple-figure thumping of Fremantle not as bad as first thought.

Newman hyper-extended the knee in the second half against the Dockers and was helped from the field, not to return. He will be given the chance to prove his fitness at training on Wednesday, failing which Longmire can reach into his well-stocked reserves where Harry Cunningham and Dan Robinson are patiently awaiting a recall to the seniors.

Captain Josh Kennedy trained on Monday and will be put through a full session on Wednesday to prove his fitness after missing wins over Geelong and Fremantle.

His inclusion would be a major boost for a Swans' midfield up against the best contested-ball team in the AFL.

"They'll get a huge test this week against the No.1 attacking team in the competition," Longmire said.

"It just won't be up to our back six, it'll be up to our full team defence to give them a hand and try and restrict Adelaide's scoring capacity.

"They're No.1 in most categories of the game. They're incredibly potent at scoring, scoring at turnovers, they're top four defence, they're No.1 contested team in the competition, you keep rattling them off.

"You can't spend too much time looking at the stats because you might get a little bit concerned. They're an A-grade team that deserves their position on the ladder."

Sam Naismith remains in doubt with a hip injury. He ran on Monday but Friday's clash might come around too quickly for his return, particularly with the form being shown by fellow ruckmen Callum Sinclair and Kurt Tippett.

The Crows are on a seven-match unbeaten run and have averaged a whopping 113 points a game this season.

They're the only club with two players in the top 10 of the Coleman Medal - Taylor Walker (48 goals) and Eddie Betts (45).

Nick Smith will likely be given the job on livewire Betts, the toughest assignment in the league for a small defender.

"You can't afford to switch off on Eddie Betts, his mind's thinking a million miles an hour every second of the game," Longmire said.

"You need to be on your game all the time because he can take it away from you really quickly, but it's also understanding you need to be confident in what you do as a team and as an individual playing on him."