St Kilda will challenge forward Max King's one-match suspension following a bump on Collingwood midfielder Finlay Macrae.

King - who collides with Macrae late - decided to engage in contact during the fourth quarter of the Saints' 15-point win.

The Pies youngster was hit high, with the Match Review Officer (MRO) grading the contact as "medium impact" and "careless conduct".

Vision shows King bypassing the ball with a raised forearm, which catches Macrae's neck after he disposes of the football.

St Kilda is challenging the one-week suspension in the hope of having King free to play this week against Essendon.

A reduced impact grading would mean King is hit with a fine instead of a suspension.

King was instrumental in the Saints' victory on Thursday night, slotting three majors and showcasing his elite athleticism against Billy Frampton and Darcy Moore.

Anthony Caminiti will come into consideration to replace the number 12 if the club's challenge is unsuccessful.

St Kilda face Essendon on Saturday, March 30.