The management of an athlete with recurrent concussions, whether persistently symptomatic or not, remains anecdotal. Currently, there are no evidence-based guidelines upon which a team physician can advise the athlete. All doctors involved in athlete care need to be aware of the potential for medicolegal problems if athletes are inappropriately returned to sport prematurely or, in the case of professional athletes, held out of sport or retired on the basis of nonscientific recommendations. This paper discusses such issues.