6. Mark Eaton (Drafted 72nd Overall In 1982)
During the 80s, the NBA had more than 2 rounds for the draft. This is how Mark Eaton was capable of being picked in what amounted to the 4th round at the 72nd overall pick by Utah in 1982. Eaton developed into one of the greatest defensive players to ever play the game. For his career, he averaged an NBA record 3.5 blocks per game.
He also led the league in blocks 4 times, with one year putting up a still NBA record 5.6 blocks per game. He is a 2-time All-Defensive Second Team selection & 3-time All-Defensive First Team selection. This is on top of being a former NBA All-Star and 2-time NBA Defensive Player of the Year. Mark is still 4th all-time in total blocks with 3,064.