SPECULATOR: Pitch mix check-ins

Earlier this year, we whipped up a quick "Change Score" metric to help quantify a pitcher's change in pitch mix from the 2020 season through early May 2021. With two-plus months of fresh data since that post, it's time for an update to see who has changed their pitch mix the most during the season, and whether or not it's working.

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  For more information about the terms used in this article, see our Glossary Primer.