MLB will use its new rules in the Arizona Fall League

Earlier this month, Major League Baseball announced several rule changes to take effect with the 2023 regular season. Briefly, they are:

A pitch clock

Limitations on defensive shifting

Larger (18 inch by 18 inch) bases

There’s going to be one other potential future rule change for MLB regular season games which is going to be tested in two parks in the Arizona Fall League, per a MLB press release:

The Automatic Ball-Strike (“ABS”) Challenge System that began in the Florida State League in 2022 will be implemented on the experimental level at the Arizona Fall League for games played at Salt River Fields and Chase Field. Batters, Pitchers, and Catchers will have the opportunity to challenge an…