But I do have a question,does baseball stars have battery back up or do you have to use a memmory card?
Yup, you need the memory card.

No I didn't like it because it was seriously flawed in many ways. It's just a poor game all the way around (not to mention it looked like a Genesis game).
To each his own...I still can't see how you can compare it to a Genesis game...were you even around in 1990? Compare it to lets say "Streets of Rage"...even though Streets of Rage was a good game, Ninja Combat was far superior in every way...how someone could look at the 2 and say SOR's graphics/sound/gameplay is better than Ninja Combat needs their head examined.

No offense, just my opinion.