In Major League Baseball (MLB) in the United States, it has become part of the culture for fans to keep home run balls that fly into the stands, but World Cup soccer balls (the official match ball) are different. Soccer balls that go into the stands at a stadium must be returned. It is not simply because there is a shortage of balls. As sensors installed inside the ball are used for officiating and data analysis, the ball has shifted from a simple piece of equipment to advanced gear for match operations.
According to the Associated Press on the 9th (local time), soccer balls that go into the stands during matches at the 2026 Fédération Internationale de Football Association (FIFA) World Cup in North and Central America and the Caribbean will be retrieved. While one goal is to maintain the flow of the game, a major factor is the evolution of recent World Cup official balls into "smart equipment" that collect various data and assist referee decisions.
The official ball for the 2026 World Cup is "TRIONDA," made by Adidas. It looks similar to a regular soccer ball, but inside is a sensor that detects the ball's movement. This sensor identifies the ball's position and motion, as well as the exact moments of player contact, and transmits the data to the in-stadium tracking system. The data is used in video assistant referee (VAR) reviews.
It plays a particularly crucial role in semiautomated offside technology (SAOT—determining offside using artificial intelligence (AI) and tracking technology). To judge offside in soccer, officials must identify not only the positions of the attacker and defenders but also the exact moment the pass is made. At that moment, the internal ball sensor combines with player-tracking data to confirm when the ball was struck, helping the officiating crew deliver decisions faster and more accurately than before.
The Associated Press noted that for the technology built into the World Cup official ball to function properly, it must be linked to the in-stadium system, and separate management such as sensor charging is also required. This is also why a ball that goes into the stands cannot become a souvenir like a home run ball. As the soccer ball itself becomes part of the match operations system, it has become a managed asset rather than a simple consumable.
Competition over such data technology in the sports industry is expected to intensify. While past competition in sports equipment development focused on materials and performance improvement, the ability to collect and use match data accurately has recently emerged as a new competitive edge. In particular, as player-tracking devices, stadium tracking systems, and AI analysis technology are combined, the role of sports equipment is also likely to change.