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Reader Questions: Which teams do the worst in extra innings? July 28, 2014

Posted by tomflesher in Baseball.
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Occasionally the World’s Worst Sports Blog likes to answer reader questions, which come in either by email at TheBadEconomist@gmail.com or through search engine queries. Today’s reader question: Which teams do the worst in extra innings? There are three measures we can take to see which teams are really the worst in extra innings.

The first is to look at the bare number of extra-innings losses. The Miami Marlins, with an extra-innings record of 6-9, hold that honor. That gives them an extra-innings win-loss percentage of .400, which isn’t great, but it’s well within the realm of chance. In fact, if extra-innings games really are a statistical crapshoot, then margin of error for 15 games is about .130.

There are a few teams that do worse in extra innings than Miami, assuming you ignore the number of games played. Both the Texas Rangers and the Toronto Blue Jays are 1-3 in extras for a win-loss of .250, and the Washington Nationals and Los Angeles Dodgers aren’t much better with records of 3-8 and attendant win percentages of .273. Those are still within the margin of error for such a small sample size. In fact, almost no teams are statistically better than chance in extra innings – only the Orioles, with a .786 win-loss mark in 14 games, are statistically outside the margin of error.

There are a few teams that are much worse than even their scores would lead us to expect. These are teams with really lousy pythagorean luck – that is, their runs allowed and runs scored predict they’d have a much better record than expected.

The unluckiest team so far has been the Chicago White Sox, with a Pythagorean expectation in extra-innings games of .450 and an actual win percentage of .286, for a mark of -.164. Texas and Toronto each come in at .159 and .156, respectively, with the Dodgers, the Nationals, the Reds, the Mariners, and the Cubs all coming in at -.100 or worse. The Giants are the luckiest team, with a luck number of .222.

What reader questions would you like me to address? Use the form below to make a request!

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