You can... Train Preassure to 20, and play that gaurd against a SF. for example get a 5'9 gaurd (18) and train his Od to 16 first, then Train Passing and handeling. He would be a pure defensive stopper. Then go back to training preassure to 20+. This could work, but may not be worth it, becuase your player will never score a positive net points.