[Layton is my Homeboy]

Originally Posted by TheoR

I know jpg works, not sure about png. They can have any name you want, because you have to go to edit ballpartk and give it the name for the graphic.

I believe (though I could be mistaken) that png will also work, as both formats are support for things like player photos and logos. So I would imagine that it's the same for the stadium pics.