Lost in the San Antonio Spurs' impressive NBA Finals run was an experiment that helped Stephon Castle and hurt star De'Aaron Fox. The Spurs went from having Castle play primarily off-ball as a rookie to having him be the de facto point guard last season. The Spurs must end the Stephon Castle experiment holding De'Aaron Fox backCastle actually led the league in turnovers through his first 20 games last season. Nevertheless, the Spurs should look to move away from having Castle play point guard and put the ball back in Fox's hands. It would not only help Fox be far more consistent, but also help Castle unlock another side of his game.