9. LaRue Martin
Called by some, the biggest draft bust in NBA history, LaRue Martin wasn't hampered by injuries or drugs like some other NBA busts, just a lack of talent. As a 6' 11" center at Loyola (Chicago) Martin averaged 18.2 points and 15.9 rebounds and outplayed Bill Walton when the two met in college. The Portland Trail Blazers were impressed enough to make Martin the top pick of the 1972 NBA Draft.
Martin only played 4 seasons with the Blazers averaging a paltry 5.3 points and 4.6 rebounds per game before retiring from the game of basketball, still considered by most as the worst No. 1 pick in NBA history.