It's nice to have a home field advantage again; since dropping the first game of the last home series with Milwaukee, the Cardinals have won 10 of their last 12 at home. It's a large part of their current surge - the ability to win at home.
Milwaukee's loss tonight means the two teams are even in the loss column. Milwaukee has played 4 more games than the Cardinals, which accounts for the two game deficit in the standings. Chicago has also played more games than St Louis (2).
While looking at the Cubs and Cardinals records against the NL, I noticed they have remarkably similar records. St Louis is actually better against the Central (30-22) than either the Cubs (27-26) or the Brewers (28-27). Cubs are .500 against the other two divisions; Brewers 1 game over, and St Louis 6 under (most of those losses are against the East).
Adding up their records against the NL, here's how it shakes out:
Cardinals 55-53 .509
Brewers 57-55 .508
Cubs 57-56 .504
That's right - without Interleague, the Cardinals are leading the Central by percentage points, and have a 2 game lead in the loss column. So it may come to pass that St Louis has the best record in the division against the division but won't win the division.
I hate interleague play. Thanks a lot, "Bud".
35 minutes ago