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MLB announces new experimental rules to be tested in the Atlantic League in 2023

New rule changes are coming to the MLB-sponsored Atlantic League.

This season, the Atlantic League will experiment with updated playing rules for teams. The new rule set will introduce a Designated Pinch Runner rule, limits on pitching disengagements and the return of the Double-Hook Designated Hitter.

"The Atlantic League is proud of our relationship with MLB as its very first partner league," Atlantic League President Rick White said in a statement. "We are excited to have pioneered the rules changes which MLB is using today to enhance the game at its highest level.  Our players and coaches are helping shape the future of the game."

The Atlantic League became an MLB partner in 2019. The partnership helped spawn new regulations, like the three-batter minimum for pitchers and bigger bases, that have reached the Major League level this season.

The new experimental rules will go into effect on April 28. The Atlantic League also features other intriguing regulations like no mound visits for pitchers, automated balls and strikes and defensive shift restrictions.

Here is a look at the new rules that will usher in the Atlantic League’s 25th anniversary.

AN ILLUSTRATED GUIDE: New pitch clock, bigger bases, no infield shifts

HOW DO THE NEW RULES WORK? Understanding the shift ban, pitch clock and more

The Atlantic League has been a testing ground for rule changes in baseball.
The Atlantic League has been a testing ground for rule changes in baseball.

Designated Pinch Runner

This new rule will intrigue baserunning purists. Teams can utilize a non-starting player as a pinch runner for the entire game. The designated player can be substituted as a baserunner in any situation. Both the substitute player and the starter can be re-inserted to the game without penalty.

Pitcher disengagement limits

Pitchers will see further restrictions on the mound. This season, pitchers will have just one disengagement during a plate appearance.

Double-Hook DH rule

Teams will have to rely on strategy more than ever. This season, there will be stiffer restrictions on designated hitters. The return of the Double-Hook DH rule will allow clubs to use the designated hitter as normal provided their starting pitcher makes it through five innings.

If a pitcher fails to reach the threshold, the team will lose the designated hitter for the remainder of the game.

This article originally appeared on USA TODAY: MLB testing new experimental rules in Atlantic League in 2023