Ralph Sampson
The big man was an immediate force, posting averages of 20.7 points, 10.8 rebounds, 2.8 assists, and 2 blocks per game over his first three seasons, which culminated in a Rockets run to the NBA Finals in 1986. He missed just three regular season games in those first three years. But knee and back injuries limited him to just 213 games over the next six seasons. His last game came at age 31.