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MLB reportedly used two different baseballs last season
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MLB.com - Wikipedia
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New MLB rules to be put to test ahead of 2023 season
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Why Major League Baseball is exploring potential revenue and sponsorship opportunities in the metaverse - Digiday
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2022-2023 MLB Offseason Calendar and Key Dates: Free Agency, Winter Meetings, Rule 5 - Fastball
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MLB announces post-season schedule, wild-card series to start Oct. 3
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MLB Network Radio™
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MLB, Major League Baseball, News, Scores, Highlights, Stats, Standings, and Rumors
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The Big Leagues: Interpretation In Major League Baseball and Beyond
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M.L.B. Proposes an 82-Game Season Starting in July - The New York Times