All players that are features in MLB 9 Innings 17 have player grades, the player grade can be broken down into 5 tiers, normal, bronze, silver, gold and diamond.
Normal is the lowest and diamond is the highest tier, players with higher grades possess higher value and more skills, diamond players may possess special skills, and now make sure to be able to unlock all these diamond players by getting the help from the MLB 9 Innings 17 hack.