COMMERCIAL SPORTS (SIC 794) Operators and promoters of professional and semi-professional athletic clubs, promoters of athletic events, and managers of individual professional athletes. Receipts from radio or television broadcasts, from sales of players, from concession operators, and from noncustomer sources are not included in the total receipts for the activities classified here. Establishments primarily engaged in renting stadiums and athletic fields to sports promoters and clubs are classified in Real Estate, Industry Group 651. Promoters and participants in racing activities, including racetrack operators, operators of racing stables, jockeys, racehorse trainers, and race car owners and operators. Establishments which own racetracks but do not engage in promotion of racing events are classified in Real Estate, Industry Group 651. Stables and kennels primarily engaged in breeding or boarding horses and dogs are classified in Agriculture, Industry 0752.