The Empty Chair at the Sideline: The Line Judge Era Ends Across Professional Tennis

At Flushing Meadows in the summer of 2026, I left the stands midway through a tie-break and walked down the corridor behind the court. A man of about sixty was taking off his blue tournament jacket, folding it neatly and setting it on the back of a chair. He worked the sideline. Twelve years on the job, he told me, and he had never missed a fitness session. Nobody interviewed him. Nobody put his name in the tournament summary. But every time a player challenged a call on Hawk-Eye and won, he was the one who absorbed the roar of the crowd.

That night I wrote one line in my notebook: The stadium is silent, but I can hear the heartbeat of a whole generation.

Six years later, nobody sits in that chair. Not at one tournament, but across almost the entire professional game.

A withdrawal planned over many years

The 2026 US Open was the first Grand Slam to run automated line calling on a broad scale, as the pandemic forced organisers to cut on-site staff to a minimum. The 2026 Australian Open followed, using electronic line calling on every court. By the 2026 season, the ATP rolled out Electronic Line Calling Live across all ATP Tour events, Challengers included. In October 2026, the All England Club announced that Wimbledon would end the use of line judges from 2026. Roland Garros also entered its first season without anyone standing on the lines.

Four Grand Slams, the entire ATP Tour, most of the WTA Tour: all of them have handed the line call to a machine. The real problem sits somewhere else. It is not whether the machine is right or wrong.

When accuracy becomes a commodity

From my own experience covering matches from ITF World Tennis Tour qualifying all the way to Grand Slam finals, one paradox stands out. The automated line-calling revolution does not erase injustice in tennis, it simply relocates that injustice from the court surface to the budget line.

At the top tier, each court once needed six to nine line judges, plus travel, hotels and daily fees. A camera system capable of calling lines is expensive to install, but its operating cost per day is far cheaper than a human crew. For events running dozens of courts in parallel during the first week, the savings are substantial. Organisers call it efficiency. Federations call it standardisation. The people who lost work call it winter.

Now look further down. At ITF 15,000 and 25,000 dollar events, where many young players and players from developing tennis nations must begin their careers, automated line calling is a distant dream. No installation budget. No technical staff. No rights contract. There, line judges remain, usually local officials on low fees, sometimes trained in a single short course.

A player can therefore compete in a Challenger qualifying draw with machine calls, then drop to an ITF event three days later and accept an entirely different standard. The same ball, two frames of reference. The same athlete, two levels of protection. For Southeast Asian players grinding for ranking points, that gap is not a detail: it directly affects prize money and access to main draws.

One detail gets overlooked. Automated line calling only measures where the ball lands. It does not measure a player deliberately distracting an opponent, does not measure a ball struck at an opponent's body with a taunting stare, does not measure the tempo of time-wasting. Those judgments still belong to the chair umpire, who now sits higher, lonelier, and with fewer vantage points.

In September 2026, at the US Open, a line judge named Laura Clark was struck in the throat by a ball after an inadvertent swing by Novak Djokovic. The world number one was defaulted from the tournament. The incident showed that line judges always stood in a zone of physical and emotional danger, but it also became the strongest argument organisers used to justify removing people from the lines. Rarely mentioned is that those same people gave the rulebook of this sport a face.

The machine is not more neutral, only harder to question

In many arguments with colleagues, I meet the same reasoning: the machine is more accurate, therefore fairer. That holds in a narrow comparison, between a line judge who can err and an algorithm with a millimetre margin of error.

But it ignores who owns the data. The training and calibration data belong to the technology vendor, not to the federation, and not to the player. When a ball lands a few millimetres from the line, the system still has to pick a threshold, and that threshold is set by people, just not people standing on the court. The biggest difference is accountability: a line judge can be challenged, disciplined, put on the news. An algorithm cannot. It does not hold press conferences.

This is the paradox insiders rarely voice. We replaced a human being who can be wrong and can be questioned with a system that can be wrong and cannot be questioned.

Among endless data, I always look for a human being still breathing. The departure of line judges is not a tragedy; it is the inevitable path of any industry when technology becomes cheaper than labour. But tennis, a sport that still prides itself on individuality and sportsmanship, should remember that every line once had a person standing on it, folding a jacket, answerable to the crowd. When the stands are empty, the most honest voice comes from an old phone, and I still have his number.