MLB The Show 21: How to Upgrade Your Ballplayer and Unlock Perks upgrade your Ballplayer and unlock Perks in MLB The Show 21? The new Ballplayer format is at the heart of Sony San Diego's baseball simulation this year, allowing you to use your created player both offline in Road to the Show and online in Diamond Dynasty (See Also: MLB The Show 21 guide, we're going to explain how to use Programs to improve your Ballplayer and unlock new Perks. For more information, refer to the following: MLB The Show 21: How to Upgrade Your Ballplayer and Unlock Perks MLB The Show 21 has unified Road to the Show and Diamond Dynasty this year, meaning that you'll create a single centralised Ballplayer for use in both modes. You'll be able to upgrade your Ballplayer by unlocking Archetypes and Perks that are part of Archetype Programs, eventually leading to higher quality Archetypes.