In today's boxing world, the pay-per-view star sits at the top of the pyramid.
Title fights still mean something, at least some of the time. Premium cable channels like HBO and Showtime still generate subscribers by programming high-profile, championship-level cards.
But the pay-per-view weekends are when the sport breaks into the mainstream. Even in an age when boxing has declined in prominence and popularity, pay-per-view stars like Floyd Mayweather still rate high on the Forbes' list of top-earning sports stars.
Pay-per-view weekends are crucial economic events for host cities like Las Vegas. Sports bars around the country pay over a thousand dollars each in order to broadcast the fight and sell mountains of chicken wings and lakes of beer.
For this list I have only considered fighters below the age of 30. Many of them have already fought on pay-per-view cards, and I can easily imagine most of them headlining a pay-per-view in the role of opponent.
But to become the actual star of the show and the main name selling the tickets is a different matter. There is only room for a few stars at a time like that.
And the competition to become one is enormous.