How many times have you watched a game and seen a player limp off at half time only to spryly sprint back onto the pitch 15 minutes later and proceed to run around like he had three legs? I think we always suspected players were getting painkilling injections before, during and after a game, we were just happy to ignore it as long as the players kept going. This and concussions are the two biggest issues the sport is reluctant to engage with.