Major_League_Baseball
Pressfolios
Spitters, Beanballs, and the Incredible Shrinking Strike Zone by Glen Waggoner, Kathleen Moloney, Hugh Howard - Ebook
Listen to Impact Radio USA podcast
MLB umpires have a new signal to call this spring - Sports Illustrated
Major_League_Baseball
Sources: 10 MLB umps retiring, most since '99 : r/baseball
MLB umpire shares his opinion of new rules: Ken Rosenthal's conversation with Dan Bellino - The Athletic
Q&A with Senior Catcher Nicole Saari - UC San Diego