The repercussions from Thursday night's torrid AFL season opener between Brisbane and St Kilda continue, with the AFL investigating a possible biting incident.

Nine Network footage from the match showed St Kilda's Steven Baker looking at his finger and then angrily confronting an opponent.

"We're making some inquiries in relation to that, to what has appeared in the media," said AFL football operations manager Adrian Anderson.

Lions ruckman Jamie Charman received a two-match suspension at the tribunal on Tuesday night, while Saints forward Aaron Hamill was cleared of striking.

There was a storm of controversy over the Nick Riewoldt incident, where Chris Scott and Mal Michael bumped the Saints captain on his injured shoulder as he left the ground.

Riewoldt was later diagnosed with a fractured collarbone, but the AFL's match review panel decided the two Brisbane players were not guilty of misconduct.

Anderson issued a stern warning that any player who interfered with an opponent who was in the hands of trainers or known to be seriously injured could expect a harsh penalty.

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