The chains are still there Max Effgen, October 19, 2026October 16, 2026 In the Bills–Jaguars playoff game (January 11, 2026), Hawk-Eye measurements ruled two first downs short — by two inches and by four. No chain crew walked onto the field to do it. That was the first full season Sony’s Hawk-Eye cameras were the NFL’s primary method for line-to-gain measurements. The chain crew stayed on the sideline, in what the league calls a secondary capacity. They were no longer the measurement. They were the backup. According to Sony’s season summary, Hawk-Eye was used for 21 measurements in all of 2025. Around that sits a larger set of numbers the league and the company were willing to put in public: 630 officiating events supported by Hawk-Eye replay and virtual measurement, more than 2,300 coach headsets (Sony says with zero hardware failures), more than 1,100 hours of broadcast capture across 300 games, and more than 130,000 published Associated Press photographs shot on Sony Alpha cameras. Twelve 360-degree PTZ cameras sat in every stadium. Most of that is replay, communications and photography. The first-down number is 21. That is a familiar design. Baseball spent a generation arguing that balls and strikes were too close to the soul of the game to hand to a screen, then built the most conservative automation available: the umpire still makes every first call, only the batter, pitcher or catcher can challenge, each team gets two challenges, and the cameras speak in about fifteen seconds. Football did not abolish the chain gang. It stopped making them walk. The official still spots the ball. The machine measures the distance to the sticks. The interesting number is not how many cameras Sony deployed. It is that the chains did not leave. A minute became thirty seconds The change fans can see is narrow and old. For decades a first-down measurement meant officials, a chain crew, and a walk onto the field. That process often took more than a minute. Hawk-Eye tracks the ball with six 8K cameras around each stadium, run from the NFL’s officiating center in New York, and the full process takes about thirty seconds — up to forty seconds faster, according to Sony and the league. Sony’s season summary puts the 2025 average at about half the time of the chain method. Forty seconds is not a revolution in the physics of football. It is a material change in the pace of a close call, which is when pace matters. Human officials still spot the ball. What changed is the primary method for line-to-gain once the spot is made. Hawk-Eye — the same optical tracking family used in tennis and, in a different configuration, in baseball’s Automated Ball-Strike challenge system — became the primary measurement starting with the 2025 season. It was tested extensively the season before. The NFL had already adopted Hawk-Eye’s SMART replay system in 2021, so the cameras were not new to the league’s workflow. Troy Vincent, the NFL’s executive vice president of football operations, put it this way: “Combining the art of officiating with Sony’s trusted Hawk-Eye system is a healthy recipe for success.” The phrasing is careful. Art stays with the official. The system is trusted for the distance. That split is the whole design. The partnership is older than the first-down story Hawk-Eye on first downs is the visible piece. It is not the whole relationship. Sony says it has worked alongside the NFL for more than a decade. The September 2026 summary of the 2025 season is a catalog of that presence: broadcast cameras logging more than 1,100 hours across 300 games; Alpha cameras producing more than 130,000 published AP images; Hawk-Eye replay and measurement supporting 630 officiating events; more than 2,300 coach headsets, which Sony says had zero hardware failures over the season. The 12 PTZ cameras per stadium supported 322 replay reviews and 141 replay assists. Tracie Rodburg, the NFL’s senior vice president of global partnerships, said: “Our partnership with Sony is rooted in a shared commitment to strengthening the game through innovation.” The language is general, but one number in the summary is not. Zero headset failures is not a claim about image quality. It is a claim, from the vendor, that a piece of sideline hardware did not fail across a full season. That is the kind of number an equipment manager and a coordinator both understand. Looking at 2026, Sony has said it will use AI-enabled pan-tilt-zoom cameras to capture dynamic shots from more angles, add replay angles for fans in venue, and expand Hawk-Eye’s use of SkeleTRACK data while improving virtual measurement. The direction is more coverage, not a new theory of the game. The theory is already set: put reliable imaging and measurement in the places the league already runs — the booth, the sideline, the first-down spot — and leave the human decisions where they were. What the numbers buy The public figures are large enough to look like marketing until you separate the jobs. Broadcast hours and AP photo counts are distribution. Sony is in the show and in the wire. For Super Bowl LIX, Sony said more than 100 of its cameras would cover the FOX broadcast, with Hawk-Eye supporting officiating reviews and broadcast replays. Officiating events and headset reliability are operations. Six hundred thirty supported events is not “AI officiating.” It is a count of times the replay and measurement stack was in the workflow, and only 21 of them were first-down measurements. Coaches do not care that the headset is Sony. They care that it works on fourth-and-one. On the evidence the league and Sony published, the partnership’s value is consistency for people who already have jobs on the field, not a robot referee. That is why the chain crew is still there. In my read, a secondary measurement is a hedge: if the optical system is the primary method, the chains are the audit. Football did not hand the spot to a camera. It handed the tape measure to one. The conservative version of automation The parallel to baseball’s Automated Ball-Strike system is structural, not technical. ABS keeps the umpire’s first call, limits who can challenge, gives each team two challenges, keeps a challenge when it succeeds, and lets Hawk-Eye speak briefly. The 2026 regular-season overturn rate on challenged pitches was 54 percent — 5,686 of 10,557 challenges, according to MLB’s ABS dashboard. That is evidence that scarce challenges are right about half the time, not evidence that umpires are failing on the pitches no one challenges. The machine is an audit. The NFL’s first-down change is the same instinct in a different uniform. The official spots the ball. Hawk-Eye measures. The chains remain available. Time comes back to the game. No one is claiming the camera is the referee. There is a cost to that conservatism, and it is the same cost ABS accepted. Edge cases still belong to people. A bad spot is still a bad spot; the optical system measures from it. Replay reviews still require a process and a standard. The 322 reviews and 141 assists supported by the stadium PTZ arrays are a workload, not a disappearance of judgment. Automation here is a better tape measure and a more reliable radio, plus enough cameras that the broadcast and the booth are looking at the same kind of image. That is less cinematic than “robot chains.” It is also why the change could survive a full season without becoming the story of every close game. When the measurement is faster and the backup is still on the sideline, the argument shifts from whether the technology belongs to whether this particular spot was right. That is a football argument. The league knows how to have it. What comes next is more angles, not a new official The 2026 notes from Sony point at AI-enabled PTZ cameras and more dynamic coverage. That is an extension of the camera count, not a change in who decides. More angles help replay, help the broadcast, and help the next close measurement. On the published plan, they do not remove the official from the spot or the chain crew from the sideline. The partnership’s first full season did what a technology deal has to do if it wants to be infrastructure: it showed up in the workflow every week, in every stadium, and produced counts the league was willing to attach its name to. Headsets that, by Sony’s account, did not fail. A first-down measurement that no longer requires a walk. Broadcast and wire photography at a volume that makes the supplier obvious. Replay support numbered in the hundreds. The chains are still there. They are no longer the measurement. That is the whole story, and it is the version of automation this league has shown it will actually run. Sources Sony and NFL 2025 season summary, September 3, 2026: 1,100+ broadcast hours across 300 games, 130,000+ AP images, 630 officiating events, 2,300+ coach headsets with zero hardware failures (per Sony), 12 PTZ cameras per stadium supporting 322 replay reviews and 141 replay assists; Hawk-Eye handled all line-to-gain measurements for the first time, used for 21 measurements, about half the time of the chain method, including two measurements in the Bills–Jaguars playoff game (two and four inches); Rodburg quote; 2026 plans. PetaPixel, September 3, 2026, summarizing the Sony/NFL release. Hawk-Eye as the primary method for measuring line to gain starting with the 2025 season; six 8K cameras; about 30 seconds, saving up to 40 seconds versus chains; chain crew in a secondary role; on-field official spots the ball; tested the previous season; NFL adopted Hawk-Eye’s SMART replay in 2021; Vincent quote. Sony, April 1, 2025; also PetaPixel and NBC News. Super Bowl LIX: more than 100 Sony cameras on the FOX broadcast; Hawk-Eye in officiating and replay. TVBEurope. MLB ABS 2026 regular season: 10,557 challenges, 5,686 overturned (54%); two challenges per team, successful challenges retained, review in about 15 seconds. Yahoo Sports, citing MLB’s ABS dashboard. The characterization of the chain crew as an “audit” or “hedge” is the author’s read, not the league’s. Avanti. Measure what matters. ...