Soccer/Football
Few things can rival football as a spectator sport and this is also matched by the number of people who participate in the sport, be it at the grassroots level, 5-a-side leagues or simply playing for fun with friends. In the last global census undertaken by the sports governing body FIFA, it was estimated that there are 265 million people who play the sport along with more than 5 million referees, which equates to 4% of the world’s population.