As of writing this, the Braves and Mets had not yet started their 4 pm game. As of publication, however, the game has likely been completed or is near completion. Select which introduction you read accordingly.
If the Braves won:
After narrowly missing a chance to clinch last night, with a win today the Phillies can seal up their fifth straight NL East pennant with no help from the Mets. Roy Oswalt will be opposed by Jake Westbrook. Ideally, the Phillies offense would score more than 2 runs and Oswalt would pitch well enough that this one is pretty much locked up by the fifth inning or so in order to get Bastardo, Madson, et al. some much needed rest.
If the Braves lost:
Yay! Division champs! Five years! etc. etc. etc. Roy Oswalt, Jake Westbrook, score some runs maybe, rest the bullpen etc. etc.