Koby Stevens

Graham "Polly" Farmer passed away in 2019 at the age of 84. After his passing, a sample of his brain tissue was examined. In a first for the AFL, both a scientific journal and the West Australian newspaper reported that the examination revealed that he had CTE (chronic traumatic encephalopathy) from head knocks he suffered during his playing career. While the medical journal did not reveal his name, the newspaper did. Farmer played 356 games from 1952 to 1971 as a ruckman for East Perth and West Perth in the WAFL and for Geelong in the VFL. He is considered a revolutionary figure in the game because of how he played the ruck position and his use of the handball.

Just after the conclusion of Round 18, St Kilda's Koby Stevens announced his retirement due to ongoing concussion issues. Stevens, 27, suffered a concussion - the eighth of his career - in Round One this year. He was still suffering delayed symptoms but did not inform the medical staff and played in Round Two. It wasn't until the lead up to Round Three that he finally went to the medical staff. The way he put it, "I'd just come back into the side, so I obviously didn't want to speak up and we had a pretty big game ... against North Melbourne and