By Evan Bleier Undersized former Heisman Trophy winners with big personalities who entered the draft amid questions about their chances of long-term success in the NFL, star NCAA quarterbacks Johnny Manziel (No. 22) and Baker Mayfield (No. 1) both wound up being selected in the first round of the draft by the Cleveland Browns. Now that Deshaun Watson has been brought in to replace Mayfield, who is still on the Browns’ roster and will most likely be traded or cut by the time the NFL season starts, Manziel and Mayfield now both hold the distinction of having to continue their football careers ou…