Computer To Call Balls And Strikes In Minor League

Get ready for strikes by robots.

No, overworked machines aren’t walking out in a labor protest.

Computers will be used for ball/strike calls starting April 25 in the independent Atlantic League, where the distance between home and first will be shortened by 3 inches. The ground between the mound and home plate will lengthen by 2 feet for the second half of the season beginning July 12.

The 60-foot-6-inch distance between the front of the pitching rubber and the back point of home plate has been standard since 1893, but Major League Baseball reached a three-year deal to experiment in the Atlantic League, an eight-team circuit that occasionally produces big leaguers. Infield defensive shifts will be limited. Pitchers there will have to get used to 62 feet, 2 inches this summer.

“That’ll make a bigger difference than the 3 inches at first,” New York Yankees first baseman Greg Bird said.

Plate umpires will wear earpieces and be informed of ball/strike calls by a TrackMan computer system that uses Doppler radar. Umps will have the ability to override the computer, which considers a pitch a strike when the ball bounces and then crosses the zone. TrackMan also does not evaluate check swings.

“The beauty of baseball is that it’s not foolproof. You’ve got to hit a round ball with a cylindrical bat square, and then you’ve got to get it past people,” said Joe West, who umpired his first big league game in 1976. “The game is typically American. It’s always somebody else’s fault when they lose — and usually it’s us.”

MLB has evaluated its umpires since first starting to install a QuesTec system in 2001 that umpires initially criticized as being inaccurate. Questec was used at a maximum of 11 ballparks in 2008, its final year.

A PitchF/x system, a partnership of MLB Advanced Media and Sportvision, was the basis of evaluations from 2009-16, and the TrackMan system was tested during the final year of that span. TrackMan has been used to evaluate umpires since 2017.

West, who has umpired more than 5,000 big league games and is on track to break Bill Klem’s record in 2020, said the 2016 test was far from perfect.

“It missed 500 pitches in April, and when I say it missed 500 pitches, that didn’t mean they called them wrong. They didn’t call them at all,” he said.

In addition, bases will become 18-inch squares in the Atlantic League, up from the 15-inch squares that have been standard since 1877. That will in effect cut the distance from the front of home plate to the front of first base from 87 feet, 9 inches to 87 feet 6 inches. The 90-foot measurement between bases is from the back of the plate to the back corner of first and third along the foul line.

While the distance between the mound and the plate will be lengthened, the height will remain 10 inches — its level since 1969.

“Changing the distance, that seems a little odd to me,” Yankees manager Aaron Boon said. “I know lowering the mound is an interesting one, obviously, something that would favor offense and maybe in some level help with some pitching injuries.”

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