MLB rule changes for 2020 season
First glimpse of MLB's new rules reveal baseball won't be the same
MLB rule changes for 2023: The shift, pitch clock, pickoffs, bigger bases, etc. - AS USA
Explaining baseball's next experiment to limit shifts: The 'pie-slice rule' - The Athletic
MLB 2023 rule changes: pitch timer, larger bases, shifts
How many Mound Visits are allowed in college baseball? Comparing and contrasting with MLB rules
Use of one-way electronic devices approved in college baseball
New baseball rules for 2023 FAQ
MLB Schedule Change to Impact TV Ratings, Attendance and Revenue –
New baseball rules for 2023 FAQ
MLB Bans the Shift and Adds a Pitch Clock for 2023 - The New York Times
MLB changes 2023: New rules include pitch clock, shift, bigger bases