Go ahead and laugh at the American Ultimate Disc League. But the professional Ultimate Frisbee organization kicked off this month, and its Detroit-based team, the Detroit Mechanix, is ready for action. And the Pontiac Silverdome is going to see some consistent action again courtesy of the Mechanix home games. It's a bit like soccer, or maybe basketball, only with a Frisbee! Fans of ultimate, take note, as well: The sport's longstanding tradition, commonly referred to as "Spirit of the Game" — of leaving it up to players to make calls on the field — has been tossed out the window. The league is using refs, and, as AUDL founder and president Josh Moore recently told Slate, this will probably get more people to take the sport seriously. The Silverdome will also play host to the AUDL's first championship game on Aug. 11.