You can also use the square button for a power swing with someone like Stanton or Trout just someone that's a heavy slugger to give the ball the little extra. As well as the circle button which is a contact swing which I personally use that when I'm down two strikes because someone can correct me if I'm wrong but the contact swing makes contact with balls that are out of the zone more often than any other swing type so it's kind of like a staying alive type of swing.
I'm not sure if you already knew this but just in case you didn't wanted to help you out a bit
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