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Diamondbacks UmpireWatch 2021: Week 3

If this is your first time reading this series, and have no clue what it’s about, you should probably go back and read the first installment. It explains what we’re doing here, where the data comes from and what it means. All I will add here, is your regular exhortation to go and follow @UmpScorecards on Twitter, without whom this article would not be possible. We cover the period from April 14-21 in this edition, which would be the four game series versus the Nationals, and the two games today against the Reds (which is why this is a day later than usual!