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Semi-automated offside technology debuts in Champions League

Semi-automated offside technology

UEFA’s use of a semi-automated technology for spotting offside violations has debuted in Champions League play.  The governing body of soccer in Europe previously announced the decision to use the fresh technology earlier in the summer.

“UEFA is constantly looking for new technological solutions to improve the game and support the work of the referees,” claimed UEFA’s chief refereeing officer Roberto Rosetti.  “This innovative system will allow VAR teams to determine offside situations quickly and more accurately, enhancing the flow of the game and the consistency of the decisions.

“The system is ready to be used in official matches and implemented at each Champions League venue.”

First use of the technology in UEFA games

The technology was used throughout the eight total European games on Tuesday night.  In the first glimpse of this new VAR application, Chelsea’s Ben Chilwell was judged to be offside as his club went towards goal.

Fans inside the stadium and watching at home on TV could see a much clearer view of the offside decision.  Instead of the typical colored lines that fans have been used to seeing over the last few seasons, the new semi-automated technology looked quite different.

A clear 3D rendering of the players appears on the screen and shows exactly how the player is ruled offside.

Copenhagen was also denied a late consolation goal due to this new technology.  Although the goal was originally given, the new VAR implementation clearly showed striker Andreas Cornelius was just offside prior to the goal.

The new technology seemed to work well in the opening day of Champions League play (see above video). 

Fans can get a second look of the new VAR execution on Wednesday in the Champions League games scheduled.

A sensor placed inside match balls maps and records all player movements throughout games.  This method records data at a rate of 500 times per second.  Along with the attention to detail, it also put in place to help cut down the time of VAR checks.

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2 Comments

2 Comments

  1. Mercator

    September 7, 2022 at 10:48 am

    It works well but they need to update the rules as well, it’s tedious when someone’s head is 2cm ahead of the defenders shoulder 25 yards across the field and they are calling offside. They should simply change it to be offside if the attacker’s foot closest to goal is fully ahead ahead of the second to last defender’s foot closest to goal. It’s called football, there is no real advantage to having a shoulder or ear ahead of the defender if both your feet are level or behind his.

    At the top level the boots should all have sensors showing relative location and touch. The referee should then get fully automated touchline, goalie and offside decisions, and the system should be able to tell when a pair of boots contacts the ball to assist on touchline and foul decisions.

    That’s the best we can probably do, and they should open up the mic between the refs so we can hear if the VAR ref is saying all ball or no ball, or if the system is telling the ref no. 10 is offside on that play. I’m actually surprised Nike or someone doesn’t have a set of smart boots yet. Smart cleats, ball and 4 laser sticks in each corner flag could probably get you a similar level of automation at Sunday league level games. Boots are already hundreds of dollars anyway, I would think people would gobble up smart cleats and a smart ball that tracks distance, touches and technique individually and offside, touchline, goal line for games.

  2. dave

    September 6, 2022 at 7:50 pm

    This is a great idea. I was not paying close attention during today’s games, but I am glad to read it worked well. No doubt there will be issues to iron out and even a few gaffes. Perhaps they tweak the tolerance for how close an attacker can be to the last defender and still be onside. Quick, consistent, transparent offside decisions will be a strong positive
    .
    Hopefully, all line calls are eventually made by sensor. Whether a ball crossed a line is not a judgment call. GDS has very occasional errors but is much more reliable than when humans used to make goal-line decisions

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