Baseball Injury Analysis Finds Early Season and Pitching Riskier

A study of all injuries resulting in Major League Baseball players being put on the disabled list finds that most injuries occur before the All-Star break, and that pitchers are more at risk than non-pitchers. Steve Mirsky reports

Illustration of a Bohr atom model spinning around the words Science Quickly with various science and medicine related icons around the text

Join Our Community of Science Lovers!

New York Yankees pitcher Andy Pettitte had to leave Sunday’s game against Tampa in the third inning because of a strained groin. He thus slightly beat the odds. Because his injury happened after the All-Star Game, which was last Tuesday. And a new study finds that more than three-quarters of injuries to major league pitchers during the course of a season occur before the all-star break.

The data on baseball injuries was presented the same day as Pettitte’s early departure at the annual meeting of the American Orthopaedic Society for Sports Medicine in Providence, Rhode Island. [Matthew Posner et al., http://bit.ly/9Q4m7K, page 61] Which makes sense because that’s Red Sox country and most of the Sox seem to be on the disabled list.

The study looked at all players who were put on the disabled list from 2002 to 2008. Pitchers were 34 percent more likely than non-pitchers to suffer injuries. And pitchers accounted for almost two-thirds of all the time spent too hurt to play.


On supporting science journalism

If you're enjoying this article, consider supporting our award-winning journalism by subscribing. By purchasing a subscription you are helping to ensure the future of impactful stories about the discoveries and ideas shaping our world today.


Most injuries to non-pitchers also happened before the all-star break. Although I wonder if that stat might reflect a greater unwillingness to disable list a player during the pennant drive. Oh, Pettitte’s out for at least a month—providing new data for further research.

—Steve Mirsky

[The above text is an exact transcript of this podcast]

It’s Time to Stand Up for Science

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in that two-century history.

I’ve been a Scientific American subscriber since I was 12 years old, and it helped shape the way I look at the world. SciAm always educates and delights me, and inspires a sense of awe for our vast, beautiful universe. I hope it does that for you, too.

If you subscribe to Scientific American, you help ensure that our coverage is centered on meaningful research and discovery; that we have the resources to report on the decisions that threaten labs across the U.S.; and that we support both budding and working scientists at a time when the value of science itself too often goes unrecognized.

In return, you get essential news, captivating podcasts, brilliant infographics, can't-miss newsletters, must-watch videos, challenging games, and the science world's best writing and reporting. You can even gift someone a subscription.

There has never been a more important time for us to stand up and show why science matters. I hope you’ll support us in that mission.

Thank you,

David M. Ewalt, Editor in Chief, Scientific American

Subscribe