i think the last regular game in osaka or kansai region is october 5, in kobe (orix). after that you will hopefully at least have at least hanshin in the climax series (play offs), which i think starts october 17. the very last game, game 7 of the play offs is scheduled for november 8, if there will ever be a 7th game.
teams in kansai region:
hanshin tigers
orix buffaloes