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Get To Know: F-Strike%

Posted By David Appelman On November 14, 2008 @ 11:50 am In Glossary | 9 Comments

F-Strike% (first pitch strike percentage): The percentage of plate appearances (for batters) or batters faced (for pitchers) that the first pitch was a strike. This includes anytime that the count after the first pitch was 0-1, or anytime the ball was put into play on the first pitch of a plate appearance.

Why you should care: Getting the first strike on a batter significantly decreases the batter’s chance of success and likewise increases a pitcher’s chance of success.

Current Baselines
: The major league average F-Strike% for all players from 2005-2008 is 59%. There is very little variation in the major league average from year to year.

Batters: A lower F-Strike% is preferable for batters.
Pitchers: A higher F-Strike% is preferable for pitchers.

Links and Resources:
Hardball Times: The Importance Of Strike One (Part One)
Hardball Times: The Importance Of Strike One (Part Two)


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