Croatia's World Cup Exit Hinges on Advanced Offside Technology After Late Goal Disallowed

Croatia's World Cup journey ended dramatically after a late goal was disallowed in their 2-1 defeat to Portugal, a decision heavily influenced by advanced ball-tracking technology. The disallowed goal, scored in the final seconds of the match, would have leveled the score and potentially sent the game into extra time. However, the referee's decision, based on an offside call, was confirmed by the new sensor technology embedded within the match ball.

This technology, detailed by FIFA, involves a small inertial measurement unit (IMU) sensor integrated into the ball. This sensor operates at a frequency of approximately 500 Hz, capturing the ball's acceleration and precise movements in three dimensions 500 times every second. This high-frequency data collection allows for an exact determination of when the ball was last touched by a player.

According to FIFA, the data from the ball sensor is transmitted in real-time to the VAR room. There, it is combined with player tracking data gathered by stadium cameras. This fusion of information assists referees in making more accurate decisions, particularly regarding offside calls and player-ball contact. FIFA emphasizes that rigorous testing between 2020 and 2022 confirmed the accuracy of the sensor data, and pre-competition protocols ensure its flawless operation.

FIFA also asserts that the sensors do not negatively impact the ball's behavior, flight, weight, or balance. Despite the technological advancements aimed at ensuring fair play, the decision ultimately led to Croatia's elimination from the tournament, marking a somber end to their World Cup campaign.