From SABR member Jon Roegele at The Hardball Times on July 12, 2017:
For the past decade, Major League Baseball pitch data have been collected and made publicly available. During much of this era, the strike zone has grown and grown, primarily by seeing the bottom of the zone drop and drop.
With the first half of the 2017 regular season in the books, it feels like an appropriate time to check in on the way the strike zone has been called by Major League Baseball home plate umpires relative to recent seasons.
Read the full article here: http://www.hardballtimes.com/midseason-2017-strike-zone-review/
Originally published: July 13, 2017. Last Updated: July 13, 2017.