Traumatic brain injuries (TBIs) sustained by athletes in contact–collision sports can cause long-term neurological complications. In recent years, cases of chronic traumatic encephalopathy—a neurodegenerative sequela of repetitive TBI—in retired boxers and American football players have been highly publicized. Here, Barry Jordan reviews the spectrum of sport-related brain injuries, and outlines the need for appropriate detection and management of both acute and chronic TBIs in athletes.