Major League Baseball is experimenting with a new rule during the 2026 Arizona Fall League in Surprise, Arizona. The league announced the test as part of its ongoing efforts to evaluate potential changes for future seasons.
The Arizona Fall League, a key developmental circuit for top prospects, serves as a testing ground for rule modifications before they reach the major leagues. Details of the specific rule were not disclosed in the initial announcement.
Bernie Pleskoff, a contributor for Forbes, reported on the development on November 10, 2026. The fall league typically runs from September through November, providing a controlled environment for MLB to assess the impact of new regulations on pace of play, strategy, and player safety.
