09/28/2019 - 2019 Under Armour Showcase: Baseball Factory's Futures East Preston is a RHP prospect who will graduate in 2021. On the mound, Preston gathers over the rubber and separates his hands on time. He works with a clean arm and extends through his release, finishing with his chest over his front knee. Preston operates with a three pitch mix with his fastball topping out at 86mph with tailing action. Breaking ball sits from 73-74mph with sharp 11-5 break. Changeup sits at 74mph with sinking action as he throws with deceptive arm speed. Overall, Preston is a talented prospect who has the potential to contribute at the next level.