MLB, Atlantic League push back two experimental playing rules and equipment initiatives
MLB announces 2022 MiLB experimental rules - Ballpark Digest
MLB, Atlantic League announce rule experiments for 2023
Atlantic League Removing Automated Ball-Strike System, But Keeping Some Experimental MLB Rules
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Atlantic League Expected To Add Robo-Umps, Other Changes From New MLB Agreement — College Baseball, MLB Draft, Prospects - Baseball America
MLB is using Atlantic League to figure out future of baseball - Sports Illustrated
MLB to Experiment with Robot Umpires, More Rule Changes in Atlantic League, News, Scores, Highlights, Stats, and Rumors
MLB to have Atlantic League experiment with moving back mound, 'double-hook' DH - ESPN
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MLB, Atlantic League announce rule experiments for 2023