Genba Girl, Sanjou!
I found where they filmed the outside scenes at the Phoenix Nest: Ajinomoto Stadium. The last scene was also filmed there. (Heh, guessed that one right! *happy dance*)
(Abaranger has some stuff filmed there as well. And puts its locations in the end credits - how convenient! Fu, fu, fu, fu!)
(There was other coolness, but I don't remember it now. Bah.)