Hey there
i played your game(made a video on it :)) and it was actually very polished. the graphics was pretty good. The AI actually remembered my shots and we were playing best of 10 meaning whoever gets 10 wins and i won. but the ai functioned so great that i would have lost. it also taught me a lot about baseball.
however what i felt missing was that there was no other mode than the casual playing. maybe consider adding some more modes like batter mode only, both batter and pitcher mode and maybe some teams with the same mechanic. Then maybe this game could be a hit as you can put it in steam or something put only put if u are sure. But this is my opinion as i loved the game and it would actually be a good, finished game!
heres the video
have fun :D