MLB, Atlantic League push back two experimental playing rules and equipment initiatives
MLB to use independent Atlantic League to experiment rules
MLB to have Atlantic League experiment with moving back mound, 'double-hook' DH - ESPN
MLB Rule Changes: Atlantic League Tests Tweaks Meant to Save Baseball - Bloomberg
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MLB, Atlantic League announce rule experiments for 2023
MLB Rule Changes: Atlantic League Tests Tweaks Meant to Save Baseball - Bloomberg
MLB to Experiment with Robot Umpires, More Rule Changes in Atlantic League, News, Scores, Highlights, Stats, and Rumors
How Well Did MLB's Experimental Minor League Rules Work? - The Ringer
Atlantic League, MLB announce experimental rules for upcoming season
Robot umpires and larger bases: MLB to test experimental rules in minors, MLB