“If sub-concussive blows are the problem then there are big implications for the way the game is played. All games.”

A study of rugby playing teenagers has discovered sub-concussive blows can cause brain injury. Trinity College research group, led by Dr Colin Doher(...)

Luke Marshall suffers a “concussive injury” during Ulster’s Pro12 game with the Scarlets. Photograph: Darren Kidd/Presseye/Inpho

The match was just four minutes old for Ulster centre Luke Marshall when he ran a preplanned line and took possession six metres from the opposition l(...)