TAYLOR Walker's season could be over, with the Adelaide captain offered a two-match ban for his sling tackle that knocked out Greater Western Sydney star Josh Kelly.

Walker was adjudged to have slung Kelly into the ground with excessive force, with the tackle graded by Michael Christian as careless conduct with high impact to the head.

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That triggered a two-game suspension, which is set to rule Walker out of Adelaide's final two home and away matches against North Melbourne and Carlton. 

"We believed there were elements of a rotation, elements of a sling and certainly there was a lifting motion as well," Christian said of Walker's tackle.

Elsewhere, North Melbourne forward Jarrad Waite was offered a fine for his high bump on Jackson Trengove – one of seven players to be fined across the weekend.

Waite caught Trengove high and late, though was only fined $3000 after the incident was judged by Christian as careless conduct with low impact to the head.

Trent Dumont was fined $2000 for rough conduct on Ed Richards in the same game, while Dale Morris was also offered a $2000 fine for tripping Jy Simpkin.

Sydney midfielder Dan Hannebery was fined $1500 for striking James Harmes in Sunday's later game, with Clayton Oliver fined $1000 for making careless contact with an umpire.

In the only other incident cited in the weekend's remaining games, Port Adelaide's Aidyn Johnson was fined $2000 for rough conduct on Tom Cole.

Meanwhile, Geelong champion Gary Ablett, who was accused of diving by some commentators after an incident involving Isaac Smith on Saturday, has avoided a fine.

"There was a fair bit of confusion around that because Quinton Narkle was immediately behind him," Christian said.

"It wasn't conclusive over whether he tripped over Narkle. But, in any case, in our assessment there was a degree of force with the Smith push."

Collingwood midfielder Levi Greenwood was also cleared of any wrongdoing for making contact with an injured player for an incident involving Dayne Zorko.

"Zorko was bent over and Levi approached him and basically lent on him," Christian said.

"It wasn't enough to push him over. There was an also element where we couldn't be satisfied that he knew he was injured … there was no trainer or medical person in attendance."

St Kilda defender Nathan Brown had already been sent directly to the AFL Tribunal for his late bump that concussed Adam Saad on Friday night, while Essendon defender Cale Hooker had already accepted a $1500 fine for misconduct on Daniel McKenzie.

Brown's Tribunal hearing will take place on Tuesday night.