MLB, MLBPA Announce Rules Changes For 2019, 2020 Seasons — College Baseball, MLB Draft, Prospects - Baseball America
MLB teams beginning to wrap heads around rule changes for 2023 - The San Diego Union-Tribune
These 25 Players Opted Out Of MLB In 2020. How Are They Doing In 2021?
MLB - New on-field rules instituted beginning with the 2023 season to create more game action and improve pace of play: atmlb.com/3L1Ggbj
MLB Announces Major Rule Changes for 2019 and 2020
New Rules Will Limit Scourge of Position Players Pitching - Cubs Insider
MLB makes 'zombie runner' permanent; restricts position players pitching. Here's how it might impact the Phillies
What MLB rule changes would you make? - Bleed Cubbie Blue
Pitching Rules Changes MLB 2020
MLB, union agree to rule changes, including roster size in 2020 - The Boston Globe
Baseball rules - Wikipedia
Explaining the MLB Rule Changes, Format for 60-Game 2020 Season, News, Scores, Highlights, Stats, and Rumors
MLB rule changes for 2020 season
How Well Did MLB's Experimental Minor League Rules Work? - The Ringer
New MLB rules are designed to speed up and shorten games - Los Angeles Times