The unavoidable intensity of rugby match play as a fast paced team sport means that players experience extreme physical stresses both during training and during games. With a particular focus on improving understanding and prevention of head injuries, multi-modal studies have been initiated across both the professional and youth sports. The aim is to enable, for the very first time, correlation of the measurements of forces, accelerations and contacts experienced during play, with functional and structural brain imaging and other biomarkers measured within a few hours of a clinically significant head impact. The ultimate vision is to develop a ubiquitous Head Impact Dose (HIDe) metric that is based on a fundamental biomechanical understanding of the potential mechanisms of brain injury across both concussive and sub-concussive impacts, and can thus be used to facilitate player management and recovery.