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Trends, patterns & fun facts

The shadow zone — every overturned pitch, on the plate

Catcher's view. Each dot is a pitch the umpire called that ABS later ruled on. Red dots were overturned (umpire missed it); gray dots were confirmed (umpire got it right). The rectangle is the ABS strike zone (17″ wide, normalized to batter height).

Reading the plate. Red dots inside the dashed zone = umpire called a ball on a strike — pitcher won that challenge. Red dots outside the dashed zone = umpire called a strike on a ball — batter won. Notice the cluster of red just outside the right edge: those are the famous "off-the-plate" called strikes that catchers know to challenge. Heart-of-plate is mostly gray because heart-of-plate calls are rarely close enough to challenge.

League distribution

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Why two percentages? Raw % treats a 1-of-1 the same as a 25-of-50 — both show 100% / 50%. The Reliable % column applies the Wilson 95% confidence lower bound, which shrinks small-sample numbers toward the league mean. Sort by Reliable % to see which umpires the ABS system is correcting consistently, not just occasionally with luck.

The fair view — accuracy on every called pitch

Challenge data only covers ~5% of pitches and is biased toward calls players think are wrong. The view below is built from every called pitch in 2026 (104,000+), classified against the ABS strike zone independently. This is the unbiased accuracy metric.

What "stolen strikes" means. A called strike on a pitch that the ABS zone says was a ball — the umpire gave the pitcher a strike that wasn't there. Lost strikes = the inverse (ball called on a pitch in the zone). The Net bias column is positive when the umpire systematically favors pitchers (stolen − lost). Across MLB, stolen strikes outnumber lost strikes ~20-to-1 — umpires are pitcher-friendly, and ABS now measures by how much.

Biggest moments of the season

#1

SD @ LAD

+0.850

Run-value swing

Ohtani, Shohei at the plate, Morgan, David pitching · inning 4 · 3-1 count
Original call: ball → ABS: strike · challenged by catcher

⚡ WALK REMOVED

HP: Ryan Additon · Sep 23

#2

MIL @ PHI

+0.703

Run-value swing

Ortiz, Joey at the plate, McFarlane, Alex pitching · inning 7 · 2-2 count
Original call: ball → ABS: strike · challenged by catcher

⚡ STRIKEOUT ADDED

HP: Dan Merzel · Sep 24

#3

NYY @ AZ

+0.633

Run-value swing

Vargas, Ildemaro at the plate, Fulmer, Michael pitching · inning 9 · 3-2 count
Original call: strike → ABS: ball · challenged by batter

⚡ STRIKEOUT REMOVED

HP: Alex Tosi · Sep 19

#4

NYM @ TEX

+0.633

Run-value swing

Díaz, Elias at the plate, Thornton, Zac pitching · inning 5 · 3-2 count
Original call: ball → ABS: strike · challenged by catcher

⚡ STRIKEOUT ADDED

HP: Erich Bacchus · Sep 24

#5

CWS @ KC

+0.613

Run-value swing

Murakami, Munetaka at the plate, Lynch IV, Daniel pitching · inning 3 · 3-2 count
Original call: strike → ABS: ball · challenged by batter

⚡ STRIKEOUT REMOVED

HP: Adam Hamari · Sep 22

#6

CHC @ CIN

+0.600

Run-value swing

Hoerner, Nico at the plate, Lowder, Rhett pitching · inning 3 · 3-0 count
Original call: strike → ABS: ball · challenged by batter

⚡ WALK ADDED

HP: D.J. Reyburn · Sep 20

#7

AZ @ COL

+0.513

Run-value swing

Carrigg, Cole at the plate, Kelly, Merrill pitching · inning 3 · 1-2 count
Original call: strike → ABS: ball · challenged by batter

⚡ STRIKEOUT REMOVED

HP: Nestor Ceja · Sep 23

#8

CHC @ BOS

+0.511

Run-value swing

Gasper, Mickey at the plate, Holmes, Clay pitching · inning 1 · 2-2 count
Original call: strike → ABS: ball · challenged by batter

⚡ STRIKEOUT REMOVED

HP: Doug Eddings · Sep 25

#9

CLE @ BOS

+0.511

Run-value swing

DeLauter, Chase at the plate, Sandoval, Patrick pitching · inning 6 · 2-2 count
Original call: ball → ABS: strike · challenged by catcher

⚡ STRIKEOUT ADDED

HP: Quinn Wolcott · Sep 24

#10

SEA @ COL

+0.510

Run-value swing

Norby, Connor at the plate, Anderson, Kade pitching · inning 6 · 1-2 count
Original call: ball → ABS: strike · challenged by catcher

⚡ STRIKEOUT ADDED

HP: Edwin Jimenez · Sep 20

#11

COL @ CWS

+0.509

Run-value swing

Karros, Kyle at the plate, Smith, Hagen pitching · inning 6 · 3-2 count
Original call: strike → ABS: ball · challenged by batter

⚡ STRIKEOUT REMOVED

HP: Mark Ripperger · Sep 25

#12

CWS @ KC

+0.501

Run-value swing

Garcia, Maikel at the plate, Fedde, Erick pitching · inning 2 · 2-2 count
Original call: strike → ABS: ball · challenged by batter

⚡ STRIKEOUT REMOVED

HP: Clint Vondrak · Sep 23

Latest overturned calls

Every challenge