#5 Clyde Drexler - 719 Blocks
Being a guard means having great ball handling and above average ability to shoot the ball, however, these were the only limitations Clyde had as a 6'7" shooting guard but what made him great was his shot blocking ability and his high steal numbers. Clyde averaged 2 steals and 0.7 blocks for his whole career.
The glide ability of Clyde (that rhymed) facilitated him in rising up and sending shots back, not to mention the 7-foot wingspan which helped a lot in getting steals and blocks. When it was all said and done Clyde finished his career with a whopping 719 blocks and averaged almost a block per game (0.9 BPG) for multiple seasons (1984-85, 1986-87, 1991-92).
The Hall-of-Fame battles with Jordan proved that the defensive ability of Clyde was no joke. Many to this day believe Clyde deserved to have a spot on All-NBA Defensive First Teams.