Dan McGwire, 6’8″
The younger brother of then-MLB superstar Mark McGwire, Dan McGwire became the tallest QB in NFL history when the Seattle Seahawks drafted him 16th overall in the 1991 NFL Draft. At 6’8″ and 240 lbs., Seahawk fans viewed him as the future QB of the team and a sure-fire star for years to come. Unfortunately, he barely even played and when he did, he didn’t do that well by any means. The Seahawks would draft Rick Mirer in the 1993 NFL Draft and McGwire would be out of the NFL by 1995 with just 2 touchdown passes to 6 interceptions. Yikes.