Jack Ringca, also known on the boards as "modsrule," specializes in counterweight play and was the 2005 U.S. National 5A Champion. He was the first player to post a perfect score in the preliminaries (compulsory ladder) of a competition for 5A, using a Duncan Flying Panda. Jack was a member of Duncan Crew World-Wide, the Infinite Illusions contest team and the DXL Crew. Since winning the 2005 U.S. Nationals with a Freehand Zero, his face has appeared on the packaging of the Throw Monkey yo-yo.