The Astros' post-season run and it's impact on next year's revenues are discussed in this article from the Houston Business Journal. I'm a touch skeptical. In the Astros' case, I think the impact depends on continued success. Suppose that Clemens does not return, and the team fails to add a significant bat. That's not a hopeful scenario. The aging 'Stros could be struggling in both the standings and at the box office next season, unless successful adjustments are made to the roster.