The NFL. MLB. The NBA ... Quidditch?
Hey, it's possible for the "Harry Potter" inspired sport to join those massive leagues -- but only if black people start playing ... at least according to Martellus Bennett.
FYI, Quidditch is a fast-paced field game that's been described as part rugby, part dodgeball ... and involves putting a ball through 3 different rings while running with a broom between your legs.
We know what you're thinking ... but Marty B gave the sport a try recently (destroying his opponents) and told TMZ Sports it's actually super fun!