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OAITW r.2.0

(31,925 posts)
Fri Feb 27, 2026, 09:21 PM Friday

Baseball ABS is a game changer.

MLB has started using radar/AI to determine the actual pitch location within the strikezone. The human factor is being tuned out. Umps call the game, but balls and strikes can now be contested. Probably only effects a dozen calls a game, but it will overcome the limitations of human subjectivity.

I thought, at some point, umpires would use Google Glasses or some similar tech to determine tough call pitches....but the results are interesting in Spring training. Umps are getting over-ruled on a lot of challenges.

23 replies = new reply since forum marked as read
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Baseball ABS is a game changer. (Original Post) OAITW r.2.0 Friday OP
What?!? Sun-Moon Friday #1
An Umpire Had Five Straight Calls Get Overturned With ABS Brother Buzz Friday #2
This is the vid that I watched that made me realize how big a game changer this tech is. OAITW r.2.0 Friday #5
There is another Video with the analysis giving the ump a pass on one pitch Brother Buzz Friday #6
I imagine ABS will compensate. If the batter changes his stance at the pitch , the zone will change at the same time. OAITW r.2.0 Friday #13
No. All hitters have been measured WestMichRad 18 hrs ago #16
The strike zone is mutable. It not only changes with the batter, LisaM 16 hrs ago #17
Don't shoot the messenger! WestMichRad 15 hrs ago #19
The two I saw the other day were in height. LisaM 13 hrs ago #22
It's spring training for umps, too... Wounded Bear Friday #3
You definitely need limitations on challenges. Most shouldn't be contested. OAITW r.2.0 Friday #4
Managers have no direct say in the pitch challenge action. WestMichRad Friday #7
How is the review done? OAITW r.2.0 Friday #9
It's actually displayed on the jumbotron at the game... Wounded Bear 12 hrs ago #23
You are correct about the actual challenge... Wounded Bear 15 hrs ago #18
I have no doubt that you are correct on this. WestMichRad 15 hrs ago #20
My guess is this is a stepping stone to ABS calling all the pitches VMA131Marine Yesterday #15
I'm a high school umpire and would love to have ABS and reviewed calls. chicoescuela Friday #8
It has to be controlled use. Otherwise, the game breaks down. OAITW r.2.0 Friday #10
Of course, you're right the number of challenges has to be controlled. chicoescuela Friday #11
It's a beautiful thing to be involved at your level. OAITW r.2.0 Friday #12
Absolutely right. I love the game and being involved with the kids that love it too. chicoescuela Friday #14
It will change the game a little... WestMichRad 15 hrs ago #21

Sun-Moon

(246 posts)
1. What?!?
Fri Feb 27, 2026, 09:28 PM
Friday

I haven’t heard about this.
What a shame. It’s part of the game to have to deal with the umps calls- whether you agree to his huge or small strike zone..
you learn to adjust.



OAITW r.2.0

(31,925 posts)
5. This is the vid that I watched that made me realize how big a game changer this tech is.
Fri Feb 27, 2026, 09:37 PM
Friday

Thanks for posting.

Brother Buzz

(39,811 posts)
6. There is another Video with the analysis giving the ump a pass on one pitch
Fri Feb 27, 2026, 09:44 PM
Friday

Showing how the batter crouched low, lowering the entire strike zone; crouching, it was a strike, standing upright, a ball

OAITW r.2.0

(31,925 posts)
13. I imagine ABS will compensate. If the batter changes his stance at the pitch , the zone will change at the same time.
Fri Feb 27, 2026, 10:37 PM
Friday

WestMichRad

(3,150 posts)
16. No. All hitters have been measured
Sat Feb 28, 2026, 07:27 AM
18 hrs ago

… standing straight up, and the height of their strike zone remains fixed regardless of stance. The crouching Rickey Henderson would have hated this!

Here’s the scoop about how the ABS challenge rules work:
https://www.mlb.com/news/abs-challenge-system-mlb-2026

LisaM

(29,588 posts)
17. The strike zone is mutable. It not only changes with the batter,
Sat Feb 28, 2026, 09:52 AM
16 hrs ago

it can change with every pitch. That's why that shadow box on TV annoys me. It stays in one place the whole time.

I'm not saying umpires are perfect, but the strike zone moves around with the batter. The only thing you can measure in a fixed way is whether it crosses the plate.

This sounds like a huge fail and yet I am sure people will defend it.

WestMichRad

(3,150 posts)
19. Don't shoot the messenger!
Sat Feb 28, 2026, 10:47 AM
15 hrs ago

All I’m saying is that… that’s not how the strike zone is being defined, for the purposes of the ABS challenge system.

I suspect that majority of challenges will be on whether the ball is inside or outside, not too high or low. And the width of the strike zone is fixed by the width of home plate, at the front of the plate.

LisaM

(29,588 posts)
22. The two I saw the other day were in height.
Sat Feb 28, 2026, 12:59 PM
13 hrs ago

(Detroit/Philly). It's also ironic - they put in a pitch count to speed up the game, then they slow it down with this.

The metrics of MLB pitching has become one of the most collasal bores in sports! People are obsessed.

Wounded Bear

(64,106 posts)
3. It's spring training for umps, too...
Fri Feb 27, 2026, 09:29 PM
Friday

They're getting back into the game as well.

Last season they used the ABS in spring training games. By the time the season had started it had kind of evened itself out to where only a few calls are overturned. Teams only get 2 fails on challenges per game, with extras added for extra innings.

I like it. It's fast and decisive. Doesn't slow the game much and doesn't cause the delays that other challenges cause.

OAITW r.2.0

(31,925 posts)
4. You definitely need limitations on challenges. Most shouldn't be contested.
Fri Feb 27, 2026, 09:36 PM
Friday

And the managers are going to hold them until they count. No guarantee that the umpire will be over-ruled...but at least there is a consistent point of reference that will make sure bad calls lessen the impact of bad calls throwing games.

WestMichRad

(3,150 posts)
7. Managers have no direct say in the pitch challenge action.
Fri Feb 27, 2026, 09:47 PM
Friday

Challenges must be made immediately, by either the pitcher, catcher or batter. No hesitation (taking time to look at the dugout, for example) is permitted.
At least, that’s my understanding of the new rule.

OAITW r.2.0

(31,925 posts)
9. How is the review done?
Fri Feb 27, 2026, 10:22 PM
Friday

Will it be by monitor or some other means? Not sure...but it is a huge step forward to getting balls and strikes called right.

Wounded Bear

(64,106 posts)
23. It's actually displayed on the jumbotron at the game...
Sat Feb 28, 2026, 01:30 PM
12 hrs ago

If the ball touches the zone it's a strike.

Wounded Bear

(64,106 posts)
18. You are correct about the actual challenge...
Sat Feb 28, 2026, 10:14 AM
15 hrs ago

It must come from the player with no bench intervention. However, you can bet your bottom dollar that managers will tell players before the game starts who can and who can't challenge. The Mariners catcher, Cal Raliegh, was pretty good at it last spring. Batters are looking at the pitch from a different angle, so their challenges will naturally be successful less often, and some guys don't have much of a clue.

The couple of spring games I've seen, the players have been pretty liberally calling challenges. I don't expect that to continue when the games start counting. In the games I saw, the two challenge limit was reached pretty quickly in the early innings, leaving no recourse later in the game. Managers will be pretty strict on who can challenge and who can't.

WestMichRad

(3,150 posts)
20. I have no doubt that you are correct on this.
Sat Feb 28, 2026, 10:51 AM
15 hrs ago

Players who have shown they have a good eye for the strike zone will be given more latitude to make challenges. I could see players getting benched for recklessly blowing challenges.

VMA131Marine

(5,240 posts)
15. My guess is this is a stepping stone to ABS calling all the pitches
Sat Feb 28, 2026, 01:09 AM
Yesterday

By relaying the outcome of each pitch to the umpire. ABS is already watching every pitch anyway. That will leave the ump to call plays at the plate, HBP, check swings, etc.

chicoescuela

(2,944 posts)
8. I'm a high school umpire and would love to have ABS and reviewed calls.
Fri Feb 27, 2026, 10:14 PM
Friday

Of course that won’t happen during my career but I think it would make me a better official. I’ve wondered about utilizing the Meta glasses would help me evaluate my performance after the game.
Love the concept.

OAITW r.2.0

(31,925 posts)
10. It has to be controlled use. Otherwise, the game breaks down.
Fri Feb 27, 2026, 10:24 PM
Friday

Teams can't challenge every ball and strike. But a few strategic challenges when the call counts makes a lot of sense.

Keep calling 'em chicoescuela!

chicoescuela

(2,944 posts)
11. Of course, you're right the number of challenges has to be controlled.
Fri Feb 27, 2026, 10:28 PM
Friday

Doubleheader scheduled tomorrow. Weather is supposed to be nice so looking forward to it. Kids are great; 90% of parents are as well.

OAITW r.2.0

(31,925 posts)
12. It's a beautiful thing to be involved at your level.
Fri Feb 27, 2026, 10:35 PM
Friday

You get to see the kids play the game for the joy of it.

WestMichRad

(3,150 posts)
21. It will change the game a little...
Sat Feb 28, 2026, 11:01 AM
15 hrs ago

But it’s not that major of a deal. Calls on a few pitches per game will be changed… probably a good thing. Umpires who have a lot of pitch calls overturned may be reigned in somewhat… probably a good thing.
Think back to how we’ve gotten ourselves all riled up in the past about rule changes, especially the package of changes a few years ago. Larger bases, limit on disengagements, pitch timer: some predicted that base stealing would be rampant. That hasn’t happened, thanks in part to catchers with cannons for arms. Steals are up… a little. I think it’s made the game more interesting, more strategic.

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