Tomas Ó Sé confirms what we already knew… an airborne O’Neills is a dangerous thing

It's a dangerous game, kicking the balls back out during the warm-up.

Concussion is a hot topic in Gaelic football at the moment, following Mayo's failure to withdraw Lee Keegan immediately after a sickening clash of heads with Cork's Eoin Cadogan in Sunday's Allianz League opener. In today's Irish Independent, columnist Tomás Ó Sé says he was concussed five or six times during his own playing career and admits he never treated it with the seriousness he now realises it warrants. One anecdote he tells about his brother Marc, however, reveals that not all brain injuries are the result of collisions with opponents - some concussions simply drop out of the sky.