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THE BOOK--Playing The Percentages In Baseball

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Monday, February 22, 2010

Debut and peak ages

By Tangotiger, 05:08 PM

Pizza:

One thing to know is that starting pitchers tend to debut (that is, have a season where they faced 250 batters or more) later than hitters. Hitters had an average age of debut of 24.63, while pitchers tended to take their bow at age 25.05. Like hitters, pitchers generally debuted between ages 23-27, with a smattering of players on either side. Both most commonly debuted at age 24.

I posted this 3 or 4 years ago, so it seems fitting to show it again:

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February 22, 2010
Debut and peak ages