2023 World Baseball Classic: Why runner on second is used in extra innings, but not other new MLB rule changes
MLB makes extra-inning rule changes permanent with runner on second - Pinstripe Alley
Houston Astros: The impact of MLB's new rules on shift, pitch clock
New MLB Rules 2023: Explaining how Pitch Clock will result in a better viewing experience
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MLB Rule Changes Designed To Increase On-Field Action
Opening Day: The biggest rule changes for the 2023 MLB season
In a sport desperate for more action, the extra-innings runner rule is just what MLB needed - The Boston Globe
2023 MLB rule changes - How teams are preparing for the season - ESPN
Baseball rules - Wikipedia
MLB adding new rules for 2023, including pitch clock and limits on the infield shift
Rules Committee Acts To Regulate the Invasion of the Late-Inning Zombies
MLB rules changes refresher for 2023 season
MLB Opening Day 2023 recap: Baseball season begins with new rules
MLB seeks 'best form of baseball' by picking up the pace, Baseball News