Called strikes on the black don’t come much louder than the 99-mph fastball Andrew Painter threw in Atlanta on September 30, 2026.
Bottom of the 10th. Two runners aboard. Two outs. The Phillies clung to a 4-3 lead, desperate to keep their season alive against the Braves in Game 2 of the National League Wild Card Series.
Painter had already pushed Dominic Smith into an 0-2 hole with two swinging strikes on changeups. Now he went back to his fastball, firing one along the inside edge.
Catcher J.T. Realmuto caught it. Home-plate umpire Adam Beck called a ball.
Painter started toward the dugout, tapping his cap. Realmuto made the same signal. Philadelphia had one challenge left, and its catcher wanted the automated system to check the pitch.
The review confirmed strike three.
Game over. Phillies win 4-3.
Realmuto hadn’t stolen a strike with a clever glove movement. He had recognized one that the umpire missed.
For decades, catcher framing depended on persuading the man behind the plate. The 2026 postseason introduced another weapon: a catcher who could challenge that judgment and prove himself right.
Before ABS, catchers had to win the argument with their gloves
The best framing catchers have always understood something that hitters hate admitting: the same pitch can look different depending on who catches it.
A fastball catches the lower edge. One catcher receives it with a steady glove, keeping the ball in the umpire’s sightline. Another reaches awkwardly, drops his wrist and makes a perfectly good strike appear low.
Same pitcher. Same location. Different call.
That’s the foundation of catcher framing, a defensive skill that baseball spent years trying to measure accurately.
Home plate stretches exactly 17 inches across, according to MLB’s official field dimensions. Statcast also tracks a region around the strike zone called the Shadow Zone, which extends approximately one baseball’s width inside and outside its boundaries.
Those few inches provide opportunities for an elite receiver.
A catcher who sticks the landing on a two-seam fastball might earn a strike that another catcher loses. A smooth reception at the knees can keep a hitter from reaching a favorable count.
The mechanics sound simple until a 98-mph fastball starts running toward the inside corner.
Catchers work from a crouch, adjusting their bodies while tracking spin and late movement. Their gloves must meet the ball without stabbing at it or yanking it toward the middle of the plate.
An exaggerated movement can undermine the presentation. A firm, controlled reception gives the umpire a cleaner picture.
At the bottom of the zone, the job becomes even harder. Catching a sharp slider near the dirt takes a different touch than sticking a backdoor fastball on the black.
The catcher faces a split-second choice: secure the pitch cleanly or risk letting it skip past him while chasing a borderline strike.
That physical skill once carried almost the entire burden of framing. No challenge could rescue a strike that the umpire missed.
Patrick Bailey showed how a quiet glove could swing a game
Picture a hypothetical eighth inning at Oracle Park.
The Giants lead by one. A runner stands on second, and the opposing hitter refuses to chase anything outside the zone. San Francisco’s reliever needs strike one without leaving a fastball over the middle.
He throws a sinker that bends toward the lower corner.
Behind the plate, Patrick Bailey receives it with barely a twitch. His wrist stays firm. The glove doesn’t stab upward, and the ball settles cleanly.
The umpire calls strike one.
That’s the sort of reception that helped Bailey save 25 runs through pitch framing in 2025, the highest total in baseball, according to MLB’s Statcast data.
Think about the alternative.
Chicago White Sox catcher Edgar Quero finished that season at minus-13 framing runs. The 38-run gap between them represented a tremendous difference in their ability to turn borderline pitches into favorable counts.
Statcast assigns approximately 0.125 runs to each extra called strike relative to expectation. Bailey’s plus-25 therefore represented roughly two and a half wins of estimated defensive value, using the standard approximation of ten runs per win. That’s statistical value, not a tally of specific Giants victories.
Back in that imagined eighth inning, the hitter now faces 0-1.
The reliever can bury a slider below the knees instead of feeding him another fastball. The batter must protect more of the plate, and one defensive swing could end the threat.
Had the umpire called Bailey’s reception a ball, the pitcher would face a different problem.
At 1-0, he risks falling behind 2-0 and giving the hitter control of the at-bat. Suddenly, that fastball over the middle becomes a much more tempting option.
MLB’s Statcast glossary supplies the numbers behind that tension. Hitters produced a .806 OPS after reaching 1-0 in 2025, compared with .607 after falling behind 0-1.
Nearly 200 points separated those situations.
Bailey doesn’t need to steal five strikes in an inning. One clean reception can give a pitcher enough breathing room to finish the job.
His philosophy is straightforward. Speaking to MLB.com in August 2025, Bailey said, “Strikes have to be strikes.”
He wanted to protect legitimate strikes first. Favorable calls on borderline pitches followed from making consistently clean receptions.
Over a full season, that approach accumulated enormous value. October compresses the stakes into individual moments.
One borderline fastball might be all a catcher gets.
For Bailey and his predecessors, the umpire’s decision once ended the discussion. If the man behind the plate missed the pitch, no amount of excellent receiving could change the call.
That was the limitation of traditional framing.
Then baseball handed catchers something their predecessors never had: the chance to prove an umpire wrong without throwing another pitch.
The glove still mattered. It just no longer had the final word.
The 2026 ABS system changed the rules behind the plate
Starting in 2026, a catcher could win a strike two ways. He could earn the umpire’s call through clean receiving or challenge that call when the pitch deserved another look.
Major League Baseball approved the Automated Ball-Strike Challenge System in September 2025 and introduced it for the 2026 season, including the playoffs.
Rather than replacing home-plate umpires, MLB gave players a limited opportunity to challenge their calls.
Each team begins with two challenges. Batters, pitchers and catchers can request a review immediately after a called ball or strike by tapping their cap or helmet.
Successful challenges stay available. Failed challenges disappear.
Teams that enter an extra inning without a challenge receive one additional opportunity.
The system uses Hawk-Eye cameras to determine whether a pitch crossed the automated strike zone. The ABS zone matches home plate’s 17-inch width, and any portion of the ball touching the zone counts as a strike.
Unlike an umpire evaluating a pitch from behind the catcher, the automated system doesn’t care whether the glove moves beautifully or awkwardly.
It judges the ball.
That changes the value of catcher framing without eliminating it.
A receiver can still influence the original umpire’s decision. But if a hitter successfully challenges a borderline strike, the catcher’s presentation no longer protects that call.
The reverse works just as well.
When the umpire misses a legitimate strike, the catcher can challenge and recover it without another pitch.
The first postseason challenges exposed both sides
The opening day of the 2026 playoffs immediately showed how important those decisions could become.
On September 29, Yankees catcher Austin Wells received a 97.7-mph cutter from Cam Schlittler against Boston’s Wilyer Abreu.
Abreu faced a 1-2 count. Schlittler’s cutter caught the outside edge, but the umpire called it a ball.
Wells challenged.
The automated system overturned the call, giving Schlittler strike three and ending the first inning.
Instead of another opportunity for Abreu, Boston’s half-inning was finished.
Later, the technology demonstrated its value to hitters.
Atlanta’s Ozzie Albies challenged a called strike against Philadelphia left-hander Jesús Luzardo. The pitch had missed the zone by 2.5 inches.
The system reversed the decision. Albies eventually walked and scored the tying run.
Both plays appear in MLB’s official record of the first postseason ABS milestones.
The contrast was revealing. Catchers gained a way to recover missed strikes, while hitters gained protection against borderline calls that traditional framing might have helped secure.
Neither side owned the technology.
Its value depended on recognizing when to use it.
The best catchers now need two different instincts
Traditional catcher framing rewards anticipation and physical control.
ABS challenges reward eyesight, judgment and nerve.
Sometimes those skills complement each other. Occasionally, they create uncomfortable decisions.
Suppose a catcher receives a borderline fastball with two outs in the fourth inning. The umpire calls a ball, but the receiver suspects it caught the corner.
Does he challenge?
An overturned call could end the inning. A failed attempt would cost his team an opportunity it might desperately need in the eighth or ninth.
That calculation becomes especially difficult during playoff games with narrow margins.
Realmuto became baseball’s most accurate challenger
Realmuto’s September 30 decision looked instinctive, but the numbers behind it were exceptional.
According to Baseball Savant’s official 2026 ABS Challenges leaderboard, Realmuto initiated 86 challenges during the regular season and won 70.
That’s an 81.4% success rate.
MLB.com’s September 29 Wild Card Series preview independently highlighted the same 70-16 record. Among the 77 catchers who attempted at least 20 challenges, Realmuto had the highest success percentage.
Yet the leaderboard exposed a different weakness.
He challenged only about one-quarter of the incorrect calls that went against Philadelphia. MLB’s postseason preview noted that he left numerous winnable opportunities unused.
An accurate catcher wasn’t necessarily an aggressive one.
Compare Realmuto with Atlanta’s Sean Murphy, who successfully challenged roughly 60% of his attempts but showed a greater willingness to question borderline calls.
Murphy accepted more risk in pursuit of overturned decisions. Realmuto preferred stronger conviction before using a challenge.
Neither approach automatically guarantees a better result.
The stakes of a particular pitch matter.
A failed challenge in the third inning might look foolish when a reliever needs one in the ninth. But refusing to challenge an inning-ending strike can also cost a team when the next batter drives home two runs.
The best strategy requires something beyond an excellent success percentage.
Catchers must understand game situations, available challenges and the consequences of letting a questionable call stand.
Why Painter trusted Realmuto with the final decision
Philadelphia’s approach to the challenge system made the September 30 finish especially meaningful.
After the victory in Atlanta, Painter told MLB.com that the Phillies wanted to preserve challenges for Realmuto during late-game situations.
The pitcher explained that the club trusted its veteran catcher’s judgment.
That trust paid off against Smith.
Painter had already worked three innings out of the bullpen. His final fastball caught the inside edge, but Beck’s original call threatened to extend the game.
Realmuto didn’t have to sell the pitch with another glove movement or plead his case.
He simply challenged.
The machine confirmed what he and Painter believed.
Philadelphia escaped with a 4-3 victory and forced a deciding Game 3.
Framing remains valuable because most calls still belong to umpires
The introduction of ABS raised a reasonable question: why spend so much time developing catcher framing if technology can overturn the result?
The first regular season supplied part of the answer.
According to Baseball-Reference’s 2026 Automated Ball-Strike Challenge Analysis, players initiated 10,557 challenges and overturned 5,685 calls.
That’s a 53.9% success rate.
Catchers accounted for 5,609 attempts and successfully overturned 58.6%. Hitters won 48.8% of their challenges, while pitchers succeeded on 39.6%.
Those figures suggest catchers possess a meaningful advantage when evaluating borderline pitches from their position behind the plate.
But the broader numbers matter just as much.
Only 1.5% of eligible pitches during the season triggered challenges. The overwhelming majority of ball-strike decisions remained untouched by automated revive.
That leaves plenty of work for an accomplished receiver.
A catcher who consistently earns borderline strikes may save his club from spending challenges in the first place. His pitcher gets the favorable count, and play continues without interruption.
When an umpire misses a call despite a clean reception, the catcher has another opportunity to help.
The two skills serve different purposes.
Catcher framing influences what the umpire sees. ABS judgment determines when to question what the umpire saw.
There’s another wrinkle for pitchers.
A pitcher who trusts his catcher’s glove can work the edges aggressively. If he also trusts the catcher’s challenge decisions, he has less reason to second-guess borderline calls.
That confidence matters with two outs and a runner in scoring position.
Pitchers already juggle velocity, command, pitch selection and the possibility of a damaging mistake. They don’t need another distraction while trying to execute a breaking ball at the knees.
An accomplished catcher can shoulder more of that burden.
October’s next defensive advantage may belong to the smartest receiver
The final pitch in Atlanta offered a glimpse of where catcher framing is heading.
For years, organizations valued the catcher who could turn an ordinary fastball into a favorable strike through polished receiving mechanics. Bailey’s 2025 season demonstrated how much that ability could be worth.
But the 2026 postseason added another dimension.
A catcher now has to judge whether a pitch deserves a challenge before the opportunity disappears. He must make that decision while managing the pitcher, tracking runners and protecting a lead.
The responsibilities pile up quickly.
An elite framing catcher might earn hundreds of favorable calls over a season. Yet one poor challenge decision could cost his club the opportunity to correct a crucial strikeout later that night.
The opposite scenario carries just as much weight.
A catcher who saves every challenge might watch his pitcher lose a critical at-bat because nobody questioned an obvious mistake.
That’s why the next generation of elite catchers will need more than quiet hands.
They’ll need the confidence to question a call without letting emotion dictate the decision. They’ll need an accurate eye for the strike zone and an understanding of how each challenge changes the game’s remaining options.
None of that makes the old skills obsolete.
Catchers must still block sliders in the dirt, control the running game and guide pitchers through dangerous lineups. They must also frame the pitches that never receive a second look.
Called strikes on the black will continue to shape postseason baseball. The difference now lies in how catchers secure them.
Realmuto’s final challenge against Atlanta captured that shift perfectly.
Painter threw a 99-mph fastball. Smith took it. The umpire missed the strike, and the catcher knew enough to challenge.
A few seconds later, Philadelphia had its victory.
The next October game might turn on an even smaller margin.
When that pitch arrives, will the catcher trust his glove, trust his eyes or know exactly when he needs both?
READ MORE: Sacrifice bunt in postseason baseball when giving away an out actually pays off
FAQs
What is catcher framing in baseball?
Catcher framing is how a catcher receives pitches to earn called strikes. Quiet glove movement can help an umpire recognize a borderline pitch as a strike.
Does MLB’s ABS system make catcher framing useless?
No. Umpires still make the original calls, and most pitches never receive a challenge. Good framing can still help pitchers earn favorable counts.
How many ABS challenges does an MLB team get?
Each team starts with two challenges. Successful challenges stay available, while unsuccessful ones disappear. Teams without challenges receive another at the start of an extra inning.
Who had the highest catcher ABS challenge success rate in 2026?
J.T. Realmuto led qualifying catchers in 2026, winning 70 of his 86 regular-season challenges for an 81.4% success rate.
Why does one framed strike matter so much in the playoffs?
One strike can change the count and a pitcher’s next decision. With runners aboard, a favorable call might end an inning and protect a lead.
