This U.S. industry comprises (1) independent athletes, such as professional or semiprofessional golfers, boxers, and race car drivers, primarily engaged in participating in live sporting or racing events before a paying audience; (2) owners of racing participants, such as cars, dogs, and horses, primarily engaged in entering them in racing events or other spectator events; and (3) establishments, such as sports trainers, primarily engaged in providing specialized services required to support participants in sports events or competitions.

• Athletes, amateur, independent
• Athletes, independent (i.e., participating in live sports events)
• Automobile racing teams
• Boxers, independent professional
• Dog owners, race (i.e., racing dogs)
• Dog racing kennels
• Drivers, harness or race car
• Figure skaters, independent
• Golfers, independent professional (i.e., participating in sports events)
• Harness drivers
• Horse racing stables
• Jockeys, horse racing
• Kennels, dog racing
• Motorcycle racing teams
• Professional athletes, independent (i.e., participating in sports events)
• Race car drivers
• Race car owners (i.e., racing cars)
• Race dog owners (i.e., racing dogs)
• Racehorse owners (i.e., racing horses)
• Racehorse trainers
• Racehorse training
• Racing stables, horse
• Racing teams (e.g., automobile, motorcycle, snowmobile)
• Referees and umpires
• Skiers, independent (i.e., participating in sports events)
• Snowmobile racing teams
• Sports professionals, independent (i.e., participating in sports events)
• Sports trainers, independent
• Stables, horse racing
• Stock car racing teams
• Tennis professionals, independent (i.e., participating in sports events)
• Training race dogs
• Training racehorses
• Wrestlers, independent professional