Christopher Michael Gronkowski (born December 26, 1986) is a former American football Fullback. He went undrafted in the 2010 NFL Draft after playing college football at the University of Arizona. He was eventually signed by the Dallas Cowboys in 2010, Indianapolis Colts in 2011, and the Denver Broncos in 2012. He is notable for pitching his company on ABC's Shark Tank and landing a deal with Mark Cuban and Alex Rodriguez.