Geelong forward Steve Johnson and Sydney defender Heath Grundy face an AFL Tribunal battle to avoid missing this weekend's start of the finals.

Both have been hit with one-match bans arising from incidents in Saturday's clash at Simonds Stadium.

Grundy faces missing Saturday's AAMI Stadium qualifying final against Adelaide, which would be a major blow to the Swans, given he will have a job on one of the Crows' key forwards Kurt Tippett or Taylor Walker.

He was booked for striking Geelong's James Podsiadly and a points reduction for a clean record wasn't not enough to dodge a suspension.

But the fact that he will receive only a one-match ban if he visits the tribunal and loses will increase Sydney's chances of contesting the charge.

Johnson faces missing Saturday night's cut-throat MCG clash with Fremantle.

He could have escaped with a reprimand for rough conduct against Swan Dan Hannebery if not for a penalty loading for a poor disciplinary record.

He would be risking a two-match ban should he fight the charge.

But Johnson avoided being hit with an additional charge of making unnecessary contact with an injured player for pulling Hannebery to his feet after he had knocked him over.

The match review panel ruled that that contact was not forceful enough to constitute an offence.

Teammate Paul Chapman is free to play, after escaping with a reprimand for a low-grade striking charge.

Gold Coast hard man Campbell Brown's off-season will be extended by six weeks unless he fights a ban over a high front-on bump on Adelaide's Aidan Riley.

Brown's heavy loading for previous offences means he risks an eight-match suspension if he fights the charge, but will miss the first six games of 2012 if he pleads guilty.

St Kilda's Leigh Montagna faces missing the opening round next season after being booked for rough conduct against Carlton's Andrew Walker in Sunday's spiteful clash.

Greater Western Sydney veteran James McDonald copped a one-match rough conduct ban from what was possibly his last AFL game, against North Melbourne on Saturday, while teammate Curtly Hampton received a reprimand for a tripping offence.

Carlton's Walker and Mitch Robinson and St Kilda's Stephen Milne and Tom Simpkin all face fines over wrestling charges.

North Melbourne's Jack Ziebell and Cruize Garlett, Gold Coast's Trent McKenzie and Brisbane's Amon Buchanan have all been fined for umpire contact.