Cordner walks away at 29 as concussion ends another stellar career

Boyd Cordner has become the third high-profile Sydney Roosters player to retire in 2021, forced out of the NRL because of repeated concussions.

Time bombs: Study reveals female athletes at far greater risk from head knocks

Women and girls are more at risk of concussion playing sport than males, take longer to recover and may suffer more severe long term impacts, experts say.