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The Polo Grounds are somewhat iconic in the MLB, formerly based in Upper Manhattan, New York City, and these grounds include “The Bathtub” used for professional baseball and American football. As such, there is a good chance you will find the hallowed grounds in the foot MLB The Show 22 at Polo Grounds. Here’s how to unlock them in Diamond Dynasty, so you can use the ground whenever you wish.
MLB The Show 21 at Unlocking Polo Grounds

To Unlock The Polo Grounds In MLB The Show 22, All You Need To Do is Unlock The Diamond Stadiums In The Game. Upon doing this, you’ll unlock the Polo Grounds which can then be used in both Diamond Dynasty mode, Exhibition, and online matches.
Unlocking all of the other classic stadiums is a bit of a pain, as these are only obtained by collecting them from packs or buying them from the market. As such, there is an element of RNG involved, but give it a bit of time and you should be able to add Polo Grounds to your stadium collection soon enough.
It’s worth noting that, as far as we can tell, there’s no other way of unlocking Polo Grounds outside of all the other classic stadiums in Diamond Dynasty. If we do another method, we’ll update this post and let you know.
That’s all you need to know how to unlock the polo grounds MLB The Show 22. for PlayStation, Xbox and Switch.