Technically it'd be the "Oakland Coliseum," although I've never actually heard anyone else refer to it as that as I don't know too many folks who enjoy sports in Oakland, or I'd just call it "the Oakland Ballpark" to differentiate heh. Once the "the ballpark" in Mission Bay starts hosting games then I think we'll have to resort to alternative naming schemes but I'm sure something better than "Chase Center" will be figured out.