Arranging and conducting exhibitions and operating a professional league in the sport of Horseball; conducting an internet based referral network between instructors, players and trainers in connection with the sport of Horseball; Equipment used in connection with the sport of Horseball, namely, balls, goals, jerseys, helmets, helmet and jersey markers, vests, stirrup connecting straps, playing field boundary markers, inflatable padding, inflation pumps, penalty and score markers, printed rules, and rider knee pads; and kits containing collections and combinations of such equipment