Good idea, well thought, but...
..Poor execution. I like the physics in hitting the ball and customizing clothing (which could be more in depth, like stripes to be colored), but the challenges were total crap. No strikes no outs? How ridiculous does a challenge get when you have to do that 10 times consecutively, and if you mess up, back to menu! More work is requires here, and you could also expand a pitching, running, and fielding mini-game. It was overall too difficult, and I wish there was a regular game mode.