A reader commented last night:

Been wondering...what's the season series look like in interleague play so far? In other words, is the AL dominating the NL? Today the score was 9-4 in favor of the AL, 10-4 if the A's close out their game against the Dodgers. Another user made a comment elsewhere about the AL being better then the NL, and I'm inclined to agree...I'm just wonderng if this is showing through in interleague up til now.

The AL leads the NL 41-29 this season, a .586 winning percentage. I don't think it really says anything much about the AL vs. the NL. First, it's a small sample size. So it could be the result of particular pairings favoring the AL, although it's tough to believe that any pairing would put Seattle and Tampa Bay at 5-0.

In the history of interleague play, the AL leads 542-536, a .503 percentage. Seems long term the leagues are pretty even.