block angels in the outfield . What aboutrobotsbehind home plate ? Ever since the words " fiddle egg ! " were first verbalize , baseball game fan have bellyached about the caliber of the umpiring , especially when it comes to call ball and work stoppage .

But from the be - measured - what - you - bid - for class come in theTrackManAutomated Ball - Strike ( acrylonitrile-butadiene-styrene ) system . AndMajor League Baseball(MLB ) is balance to expand the automated strike zone experiment from Low - A to Triple - A , the mellow level of the minor league and just a mere call - up from big league .

How Robo-umpires Work

The ABS organization – AKA " robo - umpires " – does n’t look anything like we hoped or ideate it would . ( C-3POin drear slacks , a mordant polo and a chest protector ? No such luck . ) The abdominal muscle organization is essentially a bland black box situated high up behind home crustal plate . It looks almost like a flat screen video that ’s not turned on .

But it’ssuper advancedand utilize microwave radar and synchronized camera to track just about everything on a pitch , including its release speed and pinnacle , spin rate and bloc , lengthiness , and vertical and horizontal release angles . As far as the strike zone go , it tracks the home plate elevation , collection plate side , and vertical and horizontal approach angles . Let ’s see ahuman umpiredo all that .

After immortalize these stats on a pitch , the system determines whether it ’s a ball or strike thenrelays the informationto the human arbitrator on the arena via earpiece and smartphone . The human umpire score the call , and can overturn the Bachelor of Arts system of rules if he disagrees .

TrackMan ABS system

The Method to the Madness

After the world of " I Robot , " the organization ’s surgical process seems like a bit of a letdown . But there ’s a method acting to the methodical - ness .

Think about it : call balls and strikes should be the most precise aspect of any baseball game game . And now , with a computer picking up the pitches within the destine parameters of the bang zone , it — presumably — will be more accurate than relying on a man who is easily distract and weak at home home plate .

The process has its rooter and its detractors .

MLB umpire

The system tend to call more strike — including higher and broken strikes — and often display an penetrative sensitiveness to checked swings . The software appears to have some trouble with break - bollock pitches that leave out in front of the backstop , but that ’s where the human arbiter element still come in .

And you make out this had to bump : In 2019 , Frank Viola , pitching charabanc of the High Point Rockers in the Atlantic Coast League , was the first person in baseball to beejected for arguingthe strike zona with a robo - umpire . ( More precisely , Viola ’s anger was directed at human umpire Tim Detwiler for not overrule the ruling on the theatre . ) The former Twins ace ( and Cy Young succeeder ) later tweeted that his with child kick was not knowing who was in charge — TrackMan or the human arbitrator .

disregardless , Hall of Fame third basemanMike Schmidt wrote a piecefor the Associated Press in 2019 recommend the further testing and use of machinelike umpire submit it would " alter the game for the goodness " and " continue to eliminate human deficiency . "

In denote intentions to put the system in post for testing in Low - A Southeast , MLB said it conceive TrackMan would control consistency in the strike zone and improve the pace of the plot .

There ’s no word on when ABS might be see in major league ballparks . The Major League Baseball Players Association ( MLBPA ) put the kibosh on robo - ump in major conference parks in 2023 during the most late parturiency negotiation , but MLB commissionerRob Manfred told ESPNhe would like to have them in ballpark by 2024 .