Fremantle's Ryan Nyhuis has been referred directly to the Tribunal after a sling tackle saw Port Adelaide star Robbie Gray stretchered off the field.

Nyhuis will need to front the Tribunal on Tuesday night, and no early plea is available.

Brisbane's Darcy Gardner (misconduct, $2000), Collingwood's Levi Greenwood (rough conduct, $2000), Fremantle's Nathan Wilson (misconduct 2x $1500) and Hawthorn's Jerger O'Meara (misconduct, $1500) can all accept financial sanctions for separate incidents over the weekend.