The AI does not warm up pitchers. It has been requested many times over the years. I'm fine with the AI getting an advantage against the human player in this area of the game.
I hope at some time they add it, and the AI is able to handle all of the variables in a realistic manner. I'm not optimistic, and that's not a knock on the development team. I've played many games over the years that do have the AI option. I'm not sure any of them, including The Show, get it right, or even good enough.
My 2 cents. YMMV.
