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MLB, Atlantic League announce rule experiments for 2023
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MLB testing new experimental rules in Atlantic League in 2023
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Famed N.J. mud used to rub up baseballs could be on the way out, MLB insider reports
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MLB approves two rules for 2023 - ESPN 98.1 FM - 850 AM WRUF
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New baseball rules for 2023 FAQ
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Nationals and Phillies are kids for a day, mingling among Little Leaguers
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MLB, Atlantic League will experiment new rule changes - World Baseball Softball Confederation
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Inside Baseball's Desperate Effort to Save Itself From Irrelevance - The Atlantic
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Infield shift - Wikipedia
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MLB uses Atlantic League to test more rule changes
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5 MLB Rule Changes That Were Tested In The Atlantic Baseball League - FloBaseball
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MLB is using Atlantic League to figure out future of baseball - Sports Illustrated
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MLB, Atlantic League Announce Several Significant Rule Changes — College Baseball, MLB Draft, Prospects - Baseball America