The AFL has dropped the hammer on Port Adelaide, fining them $100,000 for breaching concussion protocols in foregoing a proper head injury assessment of Aliir Aliir following his sickening clash with teammate Lachie Jones.

The fine will be split in half, with $50,000 applied to the club’s soft cap and the balance outside the cap unless a similar breach occurs in this or next year’s season.

Press PLAY to hear more about the groundbreaking fine

Nine News sports reporter Mark Readings told Karl and Gena on 6PR Breakfast the club did admit they’d made a mistake, and are now paying the price.

“It’s down to their due diligence not being up to scratch,” Mr Readings said.

Image: Sarah Reed/AFL Photos via Getty Images