The Astros are 73-84 and have completed their home schedule for this season. Other NL teams under .500 include: Mets, Nationals, Brewers, Reds, Pirates, Padres, and Diamondbacks. This is organized by drop in per game attendance from 2008 to 2009.
|Team||Attendance||Per Game||Diff from 08|
It's worth noting that the Reds, Padres, and Mets still have home games remaining.
The fact that the Mets moved into a smaller ballpark almost eliminates them from consideration here, as they have the sixth-best attendance in the Majors.
But note that the Astros have the third-highest total attendance and the third-lowest per game drop for the eight NL teams under .500. It's not particularly surprising that the top five teams for total attendance have already locked up playoff spots. I'm probably most surprised by the Brewers attendance from 2008 to 2009, as they made the playoffs last year, and haven't been within five games of the division lead since August 9.