Deadballers: Ducky and High Pockets Present…

Passionately undeveloped opinions on the state of baseball, the shifting landscape of stats and analysis, and the opiate power of El Pato tomato sauce

3 weeks of interleague

And boy how things have changed. I suppose it’s not actually too much considering one week of data is so small, but still things are different looking. That primarily is due to the White Sox getting swept by the Nationals a week and a half ago, as well as the Twins getting knocked around by the Mets in between snow storms. The AL gained some ground back with wins by Texas, New York, and Baltimore, but really only enough to stem the tide for the time being.


As you can see, the run differential took a drastic turn south in favor of the NL when the Metropolitans beat the Twins by 11. It peaked as high as +16 in favor of the senior circuit and hasn’t got closer than +8. Note: The Twins now play the Marlins for the first interleague series this week. God knows what this graph will look like come Thursday.

Hand in hand with getting outscored is losing (learned that from Joe Morgan), and you can see a nice 5 game losing streak right after I started this project. The AL Central blows. It did provide us with our first drop in expected win percentage though (at game 10). A nice recovery towards expectations has the AL being only slightly unlucky according to Pythagoras.

Meanwhile, the NL has a nice steady climb going for it, which serves up some confirmation bias for me that the AL is top-heavy in good teams while the NL has more parity but higher average talent. Provable? Hopefully for someone else.


And lastly, a new graph that shows each league’s runs scored per game in interleague contests. The NL has actually scored exactly 5 runs per game to this point, whereas the AL is a tick below 4.5. We’ll see how much the summer months cause this graph to go skyward.

I know I mentioned that Ducky wasn’t as positive this data is actually meaningful a few weeks ago and I’m still not either, but I do think it provides an interesting storyline to how the first year of year-round interleague progresses. Who’s the better league is always a nice subplot to the season and while this in no way provides an answer to that question it does provide food for thought. And pretty graphs.

-High Pockets


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