The Atlantic League of Professional Baseball made it to Cooperstown National Hall of Fame and became part of history in 2019. They were experimenting with rule changes in cooperation with Major League Baseball. One of which was a computer generated calling of balls and strikes aka RoboUmp (Automated Ball Strike System [ABS]. ABS uses a 3D computer algorithm to call balls and strikes and sends that call to a computer that signals the home plate umpire.), another rule that the Atlantic League tested for the MLB allows players to steal first base on a wild pitch or passed ball.
Umpire Fred DeJesus was the first umpire to call a full game as the home plate umpire using the computer generated umpire. His ear piece he used was given to Long Island Ducks owner and chairman Frank Boulton, who donated it to Cooperstown.
Tony Thomas of the Southern Maryland Blue Crabs made history last year when he became the first player in baseball history to successfully steal first. His cleats were also donated to Cooperstown.
While at Cooperstown National Baseball Hall of Fame, I took a few images and sent them to the president of The Atlantic League of Professional Baseball and he used them in a story on the Atlantic League website. The items are now on display.
Here is a link to the story, from The Atlantic Leagues website: