[BetoJR]

Hmmm... the "show" golthin mentioned cannot really be considered an old one, since

Spoiler for spoiler for series in question:

the last volume of the manga was published in 1999 and the dorama ran as recently as 2005, mate...

As for the anime team's decision to animate the game, really, it's not all that contrary to the manga, as Aoba does state - at least once - that she has no interest in women's baseball (and that's not really a spoiler, for those that are worried).