Dr Orchard was on the field that day in 2014 when Phillip Hughes got hit in the head by a cricket ball and died later from his injury. It marked the beginning of a long campaign by Dr Orchard and others to introduce concussion rules in cricket. In late 2019, Marnus Labuschagne became the first concussion substitute in the 142-year history of Test cricket. In this episode, Dr Orchard talks about the research, advocacy and negotiations that went into convincing the cricket world of the need for concussion rules. Why like-for-like replacements are so important in the game, and the increasing need to address the possible dangers of repeated head impacts in any sport.