New smart mouthguards which are intended to protect rugby players from serious head injuries are being scrutinised by players and coaches.
The protective equipment, which have been made mandatory by World Rugby at the elite level, can detect high impact collisions.
But during games in both Super Rugby and the Six Nations at the weekend, players were left confused after being pulled from the field for what seemed to be regulation tackles or falls.
This had led to calls from coaches and players for more development around the mouthguards before they're used as part of rugby's head knock assessments.
World Rugby's Science and Medical Manager Lindsay Starling joins Emile Donovan from the UK.
Anton Lienert-Brown after being forced from the field due to an alert from his smart mouth guard. Photo: Sky Sport
