New Sydney coach Dean Cox has already had his leadership tested, and we're still months away from round one.
The coach was forced to separate brother Chad and Corey Warner in a heated training exchange on Friday.
Younger brother Corey went at Chad after the latter laid some heavy contact during a match simulation, according to AFL media.
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Cox then swiftly stepped in as the pair went at it, with photos revealing the extent the coach – who towers over the brothers – reached to end things.
The coach separated the brothers and play resumed.
Chad and Corey Warner during Swans pre season training. AFL
At the three-quarter time break, the brothers were seen laughing.
The photos, which were shared on the AFL's official social media accounts, drew plenty of attention.
Most importantly, Chad and Corey's mother, Anita, left her thoughts on the post.
She added the facepalm emoji, with Chad replying with a laughing face emoji.
Chad and Corey Warner were separated by Dean Cox. AFL
Former West Coast ruckman Nic Naitanui tagged Geelong great Joel Selwood and his brother Adam, who is an Eagles premiership player in the post.
"This is Selwood teammate behaviour," Naitanui said with a laughing face.
Other users had their own reactions to the scuffle, including many questioning Warner's future in the red and white.
Dean Cox had a big job separating the Warner brothers at training. AFL
"Did Chad tell Corey he's moving back to WA and leaving him in Sydney?," one Instagram user said.
Chad recently purchased a four bedroom house in Perth, between West Coast and Fremantle's training grounds.
It adds to trade speculation, with the Perth-born midfielder yet to sign a contract extension with the Swans.
