PERTH, AUSTRALIA - JUNE 10: David Mackay of the Crows looks to pass the ball during the round 12 AFL match between the Fremantle Dockers and the Adelaide Crows at Optus Stadium on June 10, 2018 in Perth, Australia. (Photo by Paul Kane/Getty Images)

Adelaide veteran David Mackay will come under scrutiny for a bump that left St Kilda's Hunter Clark with a broken jaw.

Clark laid face down with blood streaming from his mouth after the collision with MacKay and was replaced by medical sub, Jack Bytel.

The incident will be assessed by MRO officer Michael Christian who will need to determine if MacKay elected to bump or if it was an unavoidable collision in the act of the contest.

Four-time Hawthorn premiership hero Jordan Lewis dubbed the incident as a "fair contest" and does not believe MacKay has a case to answer for.

“Sometimes in our game accidents happen – and I think that’s exactly what’s happened in this instance,” Lewis told Fox Footy and reported by Ben Waterworth.

“I thought it was courageous by both players when a 50-50 ball is there to win. Unfortunately, Hunter Clark was a little bit lower, but that doesn’t mean that Mackay gets suspended. I thought it was a fair contest.”

Gold Coast young gun Ben King will also come under review for elbowing Fremantle's Luke Ryan in a marking contest.

King was held to seven touches and one goal by Alex Pearce and he let his frustrations get the better of him late in the game.

King sits fourth in the Coleman Medal race with 32 goals, six goals behind Carlton's Harry McKay.

Two players who already know their fate by the MRO are Hawthorn's James Worpel and Sydney's Sam Wicks.

Both players were offered one-match bans for incidents in Friday night's game at the SCG.

Worpel will miss next week's game against Essendon, while Wicks will be unavailable to face Port Adelaide next Saturday night.