Here's the dimensions:
Left Field 336 ft
Left Center 377 ft
Center Field 403 ft
Right Center 370 ft
Right Field 335 ft
Just slightly smaller than RFK, but the seats are designed semi-like Philly's stadium. The wind should be blowing across the field too from first to third. The big problem with the stadium is parking, I don't think a lot is built, and it's surrounded by South Capital Street (freeway at that point), a bad neighborhood that you don't want to park your car in, and M Street, which won't be able to hold more than 500 cars within walking radius of the stadium. That, of course leaves Metro as the best option, but Navy Yard is a small station and unless it gets built up, it won't be able to hold the influx of fans. Getting in and out of Nationals Park will be hell, but I guess they think we're used to it because of FedEx Field.