OT, No. 2 overall, Green Bay Packers, 1989
Even for a No. 2 pick, Mandarich came into the NFL with an unusual amount of hype. SI called him the greatest offensive-line prospect of all time. Turns out he was just a workout wonder. After holding out for a huge deal his rookie season, he was a disappointment from the start. Mandarich played three seasons in Green Bay and seven total in the NFL. The next three picks in '89? Barry Sanders, Derrick Thomas and Deion Sanders.