2018, June 11, West Australian, Story and photos “Why Maister hung up boots” and photo of Beau Maister being carried off the ground by teammates Ian Richardson and Haydn Busher. An emotional Beau Maister admits his latest concussion was behind his shock mid-season retirement decision. Claremont stormed home against Swans on Saturday to farewell a champion in style producing a four goal to none final term to prevail by 20 points. It really rattled me , it really shook me up the concussion against Perth.