Melbourne's Alex Neal-Bullen has been referred directly to the AFL tribunal for his dangerous tackle on Adelaide's Will Hamill.
Hamill was knocked out when slung to the ground during the first quarter of the Crows' loss to the Demons on Wednesday night.
Neal-Bullen was booked for rough conduct (dangerous tackle) and the incident has been graded careless conduct, severe impact and high contact.
The match review officer also charged Geelong midfielder Cameron Guthrie, who is in career-best form, for his dangerous tackle on North Melbourne debutant Lachlan Hosie.
However, Guthrie is not at risk of missing the Cats' crunch match against St Kilda as he can accept a $1000 sanction with an early plea.
Crows forward Lachlan Murphy has been offered a one-match ban for engaging in rough conduct against Jack Viney.
Demons Tom Sparrow and Harley Bennell both face $1000 fines for rough-conduct charges, while teammate Jay Lockhart and former Adelaide captain Taylor Walker will be docked $750 and $1000 respectively for striking if they accept their charges.
Australian Associated Press