HISA has introduced U.S. Thoroughbred racing's first-ever recommended national concussion protocol for jockeys, the entity said in a release Thursday morning. Under HISA's Racetrack Safety rules, racetracks are required to implement a concussion protocol for jockeys. HISA's recommended protocol would become mandatory for all racetracks under their jurisdiction, when and if, the FTC approves the proposed changes, which were submitted last month. HISA's national concussion protocol was developed in consultation with leading experts to protect the health and safety of jockeys across the country and brings racing in line with...