Richmond ruckman Toby Nankervis could be in hot water following an incident against Adelaide.
Nankervis was being tackled by Adelaide midfielder David Mackay when Nankervis appeared to hit him in the nose.
Rhett Biglands spotted Mackay running off.
"David Mackay has got blood streaming from his nose," he said on Triple M.
"That errant arm was swung back and got him. The emergency umpire came up as well to have a look at it, that normally doesn't happen, which is quite strange.
Warren Tredrea believed Nankervis could cop a week on the sidelines for it.
"He's done the swing back to get rid of him, swing back, clocked him straight in the nose," he said.
"I reckon he might have a little week (for that)."