SYDNEY captain Callum Mills and Carlton recruit Ollie Florent - his former teammate - were involved in a terse exchange after the Swans' big win over the Blues on Thursday night.

AFL.com.au's award-winning photographer Michael Willson took a series of photos showing the former teammates exchanging words, with Florent seemingly refusing to shake Mills' hand after the Swans' 63-point win at the SCG on Thursday night.

SWANS v BLUES Full match coverage and stats

Vision broadcast by Channel 7 showed Mills and Florent hugging during a different interaction as the two sides mingled after the game.

It came after a fiery season-opener as new Blues Florent and Will Hayward came up against their former side, and Charlie Curnow faced his old Carlton teammates.

Florent was also involved in a collision with Isaac Heeney in the second quarter, with his knee catching the Swans star's head.

When asked about the incident, Swans coach Dean Cox appeared genuinely taken aback, letting out an involuntary "ooooh".

"I've no idea about that, none at all. They're good mates, that's what I know. I'm not sure," Cox said.

"We'll speak to Callum about it, I'm not sure what happened out on the field. They're there to compete against each other, but they're good mates. We've played against players who have left our football club at times."