With 5,686 calls overturned in its debut season, the new challenge system delivers justice to the diamond, silencing umpire controversy and placing the game’s fate in Hawk-Eye.
The countless times I’ve nearly thrown my TV off a balcony or gone to the corner to start crying were all but distant memories in 2026.
Despite the Tigers missing the playoffs for the first time in three years, and supreme agony racing through my body almost every day from the end of spring through the summer, I didn’t find myself nearly as mad as I once was.
Why?
The new Automated Ball-Strike (ABS) Challenge System.
The system truly brought a whole new look to Major League Baseball. More importantly, it gave fans a new understanding of just how difficult it is to consistently call balls and strikes without the magical strike-zone box that appears on your television screen.
For generations, MLB relied almost entirely on the eyes of its umpires.
Some of those umpires were better than others. Some were older. Some seemingly had a strike zone that changed depending on what they had for breakfast.
And for decades, once the umpire made the call, that was it.
If your team lost because of an atrocious strike-three call or an inning was extended because of a terrible ball call, there was essentially nothing anyone could do. Managers could argue with umpires until they were blue in the face, but the ball or strike call wasn't getting overturned.
That changed in 2026.
ABS Finally Gives Fans an Answer
MLB introduced the ABS Challenge System this season, giving each team two challenges to start a game, with successful challenges retained. The batter, pitcher or catcher can immediately request a review, and the result is displayed almost instantaneously.
And over the course of the regular season, 5,686 ball and strike calls were overturned.
That number alone shows how different baseball could have looked if this technology had been available five, 10 or even 20 years ago.
And before anyone says, "It wasn't around back then," stop yourself.
The technology was.
Tennis began using Hawk-Eye for line-calling in the mid-2000s, while MLB spent years experimenting with similar technology before finally bringing the ABS Challenge System to the majors.
MLB's system uses 12 Hawk-Eye cameras to track pitches, with the result of a challenge taking roughly 15 seconds.
That's an important part of why this system has worked.
It isn't turning baseball into a game where robots make every call. The umpire still makes the initial decision. Players simply have the ability to challenge the calls that matter most.
And despite 5,686 overturned calls, that number represents a relatively small percentage of the hundreds of thousands of pitches thrown across a full MLB season.
The overall overturn rate was 54%, with 10,557 total challenges during the regular season, according to MLB's ABS dashboard.
But as we all know, sports aren't always decided by feet.
Sometimes they're decided by inches.
Sometimes millimeters.
And sometimes, they're decided by a baseball barely clipping the strike zone.
There Is Now Nowhere to Hide
Perhaps the biggest change is that there is finally concrete evidence when an umpire gets a ball or strike call wrong.
According to UmpScorecards data, some of the lowest accuracy marks among MLB umpires in 2026 included:
• C.B. Bucknor — 91.33% accuracy• Jen Pawol — 91.8% accuracy• Laz Diaz — just over 92% accuracy• Andy Fletcher — 92.53% accuracy• Brian O’Nora — 92.68% accuracy
Those numbers don't mean every missed call was a disastrous one. A pitch barely missing the zone and a pitch several inches outside aren't exactly the same thing.
But for the first time, fans have another way to measure what they've been complaining about for years.
And Tigers fans got their own memorable example.
In Detroit's Sept. 17 game against the White Sox, Bruce Dreckman had 91.52% accuracy across 165 pitches, according to UmpScorecards. He finished the game with -4.31 Correct Calls Above Expected.
Let's just say it wasn't exactly the most peaceful afternoon for Tigers fans watching the strike zone.
ABS Isn't Going Anywhere
The ABS Challenge System seemed to be a huge success in its first season.
It gave players a way to correct particularly important calls without turning every borderline pitch into a five-minute replay review. It added another strategic element to the game while keeping the human umpire involved.
And perhaps most importantly, it gave fans something baseball desperately needed:
an answer.
There will always be arguments over the strike zone. There will always be borderline pitches. There will always be fans convinced their team got screwed by an umpire.
That's baseball.
But now, when a questionable call happens, there is at least a mechanism to find out whether the umpire actually got it right.
Personally, I think MLB should take the next step.
Give umpires a performance-based system similar to what players face. If an umpire consistently performs near the bottom of the league, there should be consequences. My personal solution? Relegation.
The bottom five MLB umpires move to Triple-A. The top five Triple-A umpires move up.
Do the same between Triple-A and Double-A.
Maybe that's unrealistic. Maybe the umpire union would have a few things to say about it.
But the point remains: if players can be sent down when they aren't performing, why shouldn't umpires face some version of the same accountability?
The ABS Challenge System has already changed how baseball handles one of its oldest problems.
After one season, it seems pretty clear that the challenge system isn't going anywhere.
And honestly, that's one of the best things MLB has implemented in quite some time.
