St Kilda star concussed in brutal collision

Jack Newnes was knocked out of St Kilda's clash with Sydney after coming off second best in a sickening collision with Callum Mills.

Playing in his 100th game, Newnes put his head over a loose ball in the first half but collected the hip of Mills.

MATCH CENTRE: Sydney v St Kilda

He lay motionless on the ground for several seconds before getting to his feet and heading to the bench.

Unfortunately for Newnes his milestone match came to a premature end, ruled out for the rest of the day with concussion.