The minor leagues will experimenting with several rule changes in this season, including an automated strike zone, restrictions on defensive positioning and larger bases.
The Mariners opened their 2021 Cactus League schedule on Monday with a walk-off 5-4 victory over the highly touted San Diego Padres. Phenoms Jarred Kelenic and Julio Rodriguez showed the promise that has them ranked as top prospects in all of Major League Baseball by propelling them to victory.
MLB has reorganized its minor leagues in a 120-team regional alignment. MLB released a plan for two Triple-A divisions, and three divisions each for Double-A, High-A and Low-A.