Fremantle forward Michael Walters will challenge his one-game headbutting ban at the AFL Tribunal on Tuesday night.

Walters was offered the one-game suspension by the Match Review Officer on Monday, with his headbutt on Melbourne’s Jay Lockhart graded as intentional conduct with low impact to the head.

However, the Dockers have decided to roll the dice and risk a $10,000 fine.

Fremantle would appear to have plenty going against them given there is minimal video footage of the incident, with the case relying on the evidence of reporting umpire Curtis Deboy.

Walters will join West Coast defender Jeremy McGovern at the Tribunal, who is also arguing against his one-game rough conduct ban.

McGovern was charged for an incident where he pushed Essendon’s Matt Guelfi, who then collided with a chair and the fence, on Thursday night at Optus Stadium.

“The chair defence will come into play here – I’m not sure if McGovern had to scan the boundary line for a plastic chair before he made an indiscretion on the field,” Eagles coach Adam Simpson told Channel Seven’s Talking Footy.

But match reviewer Michael Christian said it was Guelfi’s collision with the fence, not the chair, that earned McGovern his suspension.

“While he did hit the chair with his torso or midriff area, this charge was about the contact with the fence,” Christian said.

Meanwhile, Port Adelaide have accepted Karl Amon’s one-game rough conduct ban and a one-match striking suspension handed to Dougal Howard.

Amon was suspended for an off-the-ball bump on Geelong forward Gary Rohan, while Howard will miss for striking Cats’ veteran Harry Taylor.

Both players will be unavailable for the Power’s Round 15 clash against the Western Bulldogs at Adelaide Oval on Saturday night.