The first major roster update for MLB The Show 26 is set to release on Friday, May 8, 2026. This update will focus on player attribute changes, which will impact player ratings (OVR) and affect the Diamond and Gold tiers in Diamond Dynasty. While weekly updates have been happening since March 27, they mainly cover trades, call-ups, and other real-world transactions. The attribute updates are what players look forward to most, as these updates directly affect the in-game stats of players, including moving some players into higher tiers or possibly downgrading others.

Key Roster Update Details & Release Date

Transaction Updates

Starting from March 27, 2026, MLB The Show 26 has been providing weekly transaction updates every Friday. These updates are based on real-world player movements, like trades, call-ups, and roster changes, and help reflect the latest in the MLB world.

For example, the March 27 update saw 31 total rating changes, but no player moved into the Diamond tier at that point. These weekly updates are important, but the real excitement comes with the attribute updates that happen every 3 to 5 weeks, which will be more significant in terms of player ratings and card tier changes.

Attribute Updates: What You Need to Know

• First Major Attribute Update: The first significant update will occur on May 8, 2026. This is the first time in MLB The Show 26 that we'll see player ratings impacted by their performance in the season. Players who have had a strong start to the season will see their OVR ratings rise, potentially pushing them into higher tiers like Diamond or Gold.
• Diamond Dynasty: These changes will directly affect the Live Series cards in Diamond Dynasty. So, players who are doing well in the real MLB season could see their ratings get upgraded, which makes them even more valuable in-game. For example, hot starts by players like Will Smith (Dodgers) and Andres Muñoz (Mariners) could lead to upgrades in their in-game stats.
• Franchise Mode: If you're playing Franchise Mode, you will need to manually download the latest roster by selecting the "Live Roster" option in the file management section. This will ensure that your new franchise saves are up-to-date with the latest roster updates.

Why the Attribute Update Matters

The attribute update on May 8 will be the first real chance for players to make big jumps in their ratings. It's important for players who are investing in Live Series cards for Diamond Dynasty. If you're holding onto cards for players who are off to a great start in the season, this is when they could see their ratings go up, which could lead to more value in the market or improved performance in the game.

Players to Watch

There are a few players to keep an eye on for the first attribute update. Based on their performance early in the 2026 MLB season, they could be candidates for upgrades:

• Will Smith (Dodgers): Smith has been doing great early on, and there's a chance he could jump into the Gold or even Diamond tier in the update.
• Andres Muñoz (Mariners): As a standout player, Muñoz is also in a good position for a potential attribute boost based on his performance.

How It Affects Diamond Dynasty

For those of you focused on Diamond Dynasty, these updates are what make the game feel fresh and dynamic. Player ratings will be adjusted based on their real-life performances, so you'll need to keep an eye on the real MLB season to make smart decisions about which players to invest in or sell. A good performance from a player could mean a huge jump in their card tier, so if you're holding on to any players that could make a jump, this update could be crucial to getting the most value out of them.