MLB to alter baseballs for 2021 season

MLB: Pitchers who alter balls will get banned for 10 games

PETA Wants MLB to Start Calling the 'Bullpen' an 'Arm Barn' over Treatment of Cows, News, Scores, Highlights, Stats, and Rumors

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Cleveland MLB owner says team name will change, but not in 2021

MLB aiming for fewer home runs with new baseball

Cincinnati Reds: Fixing MLB wild card round needed

Welcome to MLB's new dead ball era: How 2022 might change with the juiced ball gone - Yahoo Sports

News emerges MLB used 2 types of baseballs in 2021 as labor deadline passes : NPR

Part of recent surge in MLB home runs linked to climate change