If Collingwood fear fatigue ahead of Friday night's AFL Preliminary Final against Sydney, they're not letting it show.

Magpies midfielder Dale Thomas says two physical finals and a six-day break leading into the match won't be a concern against a far fresher Swans outfit.

Collingwood's 13-point Semi-Final win over West Coast at the MCG on Saturday was a tough hitout - the week after the Magpies and Hawthorn hammered each other in an epic Qualifying Final won by the Hawks.

Thomas admitted the matches took a physical toll, but had full confidence in the Magpies' powers of recuperation ahead of their ANZ Stadium clash.

"They (the physical nature of the matches) were probably on par I reckon," Thomas said.

"Last week was a very physical game, a four-quarter effort, but we didn't get the result we were after.

"It's the way you want to go through.

"We'll get the chance to rest and recover, but I think we take a lot of confidence from the way we've been playing the last couple of weeks going into next weekend."

Thomas was the match-winner in the Magpies' 10.13 (73) to 9.6 (60) win over the Eagles.

His three third-quarter goals swung the scoreboard Collingwood's way to mirror all key indicators after the Magpies dominated, yet trailed at halftime.

A player of different class enduring an indifferent season, Thomas had struggled in the first half of a final of the highest quality and pressure.

But the 25-year-old's untimely run of injuries in 2012 was replaced by the most timely run of impact to open the third term.

With his side trailing by 11 points despite winning almost all first half indicators, Thomas booted two quick goals, then earned a free-kick and goaled again to turn the match Collingwood's way.

Thomas said there had been no halftime panic from Collingwood - convinced they would eventually grind down the Eagles if they kept on top statistically.

"If you win those indicators and you're not in front, it's only a matter of time if you keep chipping away," Thomas said.

"We knew if we kept applying ourselves to the contest, it would swing."

Last year then-St Kilda coach Ross Lyon rated Thomas the best player in the competition midway through a spectacular 2011 season.

He had barely been a factor this year.

Yet his Saturday night contribution may prove one of the AFL season's most important.