When do baseball teams score runs?

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One of the marks of a smart baseball writer is the ability to sense a trend, research its existence and nature, place her findings in context, and present her conclusions in a way that meaningfully educates readers. Inherent in this ability is the wherewithal¬†to know when to stop researching a trend or pressing on a concept, realizing that the fruits of the work have been or soon will be exhausted. Sometimes a person who is not a “smart baseball writer” by the foregoing definition will noodle about on an idea for so long, he’ll end up with a small pile of research that no longer has any bearing on any meaningful conclusions.

Two years ago, I decided to investigate a hunch that the Detroit Tigers were having trouble scoring runs late in games. My initial research mostly seemed to support my hypothesis, and a follow-up look appeared to confirm it more strongly. More than merely interesting (and fleetingly self-satisfying), it also was informatively concerning, because it placed the team’s well-known bullpen problems in a more nuanced light: relief-pitching woes alone weren’t the problem, because the lack of late-game scoring was compounding the problem of surrendering leads during the final frames. As strange as it seemed, the Tigers had interrelated shortcomings on both sides of the plate.

One comment I received in the course of sharing those findings stuck with me: I needed to place this information in context. After all, there are plausible reasons to believe that all teams might, perhaps to varying extents, experience decreased run production in the late innings.

And so it was that, two years later, I finally discovered Retrosheet, a site that compiles inning-by-inning scoring data to a more useful degree than the resources I’d utilized back in 2013. What follows are two graphs of the inning-by-inning scoring of sixteen teams for the 2014 season. Continue reading

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