This is not working for the Rays. Colorado Rockies, bad team for a couple years, averaging 33,000 a game. Twins, bad team for a couple years, averaging 35,000 a game. Mets, bad team for a couple years, averaging 29,000 a game. Every market is different. There isn't a hard and fast rule you can apply to new stadiums and attendance. As far as stadiums being 'empty' there are only a handful of ballparks that don't sell at least 50% of their seats each season. Typically it is Oakland, Tampa Bay, Toronto, Cleveland, Baltimore.