Each of baseball's divisions, of course, has a .500 record against itself. Take those out, and what are the records of each division solely against out-of-division opponents? Let's rank them by winning percentage through Sunday's action:

(Current standings here). The NL East is 11-4 vs. the West and 18-9 vs. the Central, so it's not just having a lot of games against the weak sisters of the Central; the East is one tough division even in spite of the apparent lack of a single dominant team. Note that the powerhouse Cardinals are 3-7 outside their division, 16-4 in their own pond.