Castle's ability to handle and facilitate at 6'6" and 215 pounds separates him as one of the most efficient pick-and-roll operators in this year's draft class. He excelled in ball screens without a reliable pull-up, mostly due to his live-dribble passing and ability to use pacing and physicality while taking it to the rim.
There are times when Castle looks like a natural point guard with his command, vision and unselfishness.
Castle's ability to change direction and play through contact makes him a driving weapon. He's excellent in transition with his body control on finishes as well.
Castle's strength also works well for offensive rebounding and picking up second-chance points, giving him another pathway for scoring when his jumper isn't falling.
Castle's steal and block rates don't tell the full story about his defense, which has the chance to be extremely valuable in the NBA. Teams are alway looking for stoppers who can guard the opposing team's star wing scorers, and Castle has the right ingredients with his size, strength and length.