Strike Zone is imaginary. Replace it (and catcher & plate umpire) with physical no tech target. Monday, March 30, 2026
For me the biggest thing I learned from the new Strike Zone (SZ) challenge system implemented in 2026, is that all "edges" of the SZ require only the barest minimum of overlap with the pitch. I knew that was true for the horizontal inside and outside edge of home plate but it's also the ill-defined vertical top and bottom. And most amazingly, all four unnecessary corners...
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The box we've seen on TV in recent years representing the Strike Zone (SZ) didn't seem quite right. For last night's Yankee game I froze the image for a couple of batters and measured as best I could. This confirmed my suspicion that it was the same for all batters. And it was almost a square. You would expect that it would be noticeably longer vertically. It certainly was not for 6'7" Aaron Judge. For 5'11" Jazz Chisholm the horizontal top was below his waist. It should be half way between his "shoulders and the top of the uniform pants".
So I ran a basic query and got a bunch of interesting stuff about the image of the imaginary SZ for the 2026 season with the implementation of the challenge system.
Strike Zone image: do all MLB teams use the same one?
- Unified Data: The strike zone data used for all broadcasts is now based on the ABS system, which calculates a unique zone for each batter based on their height (53.5% of height for the top, 27% for the bottom).
- Removal of Live "Ball/Strike" Labeling: To prevent teams from exploiting the feed, MLB has asked broadcasters to remove the dot that immediately indicates if a pitch is a ball or a strike.
- Broadcast Discretion: While the underlying data is the same, individual television networks (e.g., YES Network, NESN) still have control over the aesthetic, color, and design of their specific on-screen overlay.
- Network Variations: Different networks used different technology partners, resulting in different shapes, sizes, and colors for the box.
- Angle Differences: Because the boxes are overlaid on a 2D screen from a camera behind the center field, the angle could make the box appear slightly different in each stadium, depending on the camera placement.
- Accuracy Issues: Some broadcast boxes were notoriously inaccurate compared to the actual Statcast data.
- Broadcast vs. Official: The box you see on TV is a graphic overlay, whereas the official challenge system uses Hawk-Eye cameras (12 per stadium) to determine the actual 3D location of the ball at the midpoint of the plate.
- No More "In-the-Moment" Verdict: As of 2026, broadcasts show the box to aid the viewer, but they will not explicitly label the pitch as a "ball" or "strike" in real-time, leaving that for the viewer to determine, or to be determined by a challenge.
