Null Team
From Blaseball Wiki
Scientists hypothesize the existence of a 21st team, based on inferences made from gravitational disturbances observed in the outermost planets of our solar system.
Occasionally when a bet is misplaced on a matchup between two extant teams, the bet is instead placed on Null Team. Regardless of who wins the matchup, Null team loses and the bettor's coins are sacrificed to the Void.
