Beep ball is a game that features pitching, hitting, fielding — many key aspects of baseball. But one aspect is noticeably absent.

Beep ball was designed for the visually impaired, and all players — with the exception of the pitcher — must wear blindfolds. This makes the mastery of the other senses, particularly the sense of hearing, imperative in order to compete in the game at a high level — as the Boston Renegades do.

Check out the video above to learn more about the obscure but competitive sport, and click here to find more information on the Renegades.