18-year-old Aiden O'Driscoll, Western Bulldogs draftee, retires due to concussion.

18-year-old Western Bulldogs draftee Aiden O'Driscoll has been forced into medical retirement due to concussion. Drafted at pick 55 last November, O'Driscoll suffered a significant head injury during a pre-season training session in January and has not played a game for the Bulldogs. He is the third player to be forced into retirement due to concussion this season, following Melbourne midfielder Angus Brayshaw and Collingwood defender Nathan Murphy.