Josko Gvardiol’s 103rd-minute strike appeared to have forced extra time in Toronto, sparking wild Croatian celebrations. Then the video assistant referee intervened. After a prolonged review, Norwegian referee Espen Eskås disallowed the goal, and with it Croatia’s hopes of a comeback. The decisive evidence came not from a camera but from a microchip: the connected ball technology inside the Adidas Trionda had registered a faint touch by Igor Matanović on a cross, a contact so slight it was invisible to the naked eye. Because Mario Pašalić was in an offside position when that touch occurred, his subsequent assist for Gvardiol was illegal. The final whistle blew moments later on a 2-1 Portugal victory.

The match had already swung dramatically. Ivan Perišić gave Croatia the lead early in the second half, but Cristiano Ronaldo levelled from the penalty spot after a VAR review for a foul on Renato Veiga. Gonçalo Ramos then headed Portugal in front in the fourth minute of stoppage time. Croatia, refusing to yield, poured forward and thought they had equalised when Gvardiol prodded home from close range. The on-field decision was a goal, but the VAR check revealed the sensor data: a small spike on a heartbeat-like graphic, shown to television viewers, that confirmed Matanović’s touch. FIFA later stated that the inertial measurement unit sensors inside the ball “are capable of determining any slight contact” and that the data allowed the referee to “correctly determine offside and disallow the goal.”

Reactions cleaved along predictable lines. Croatia’s coach Zlatko Dalić said VAR “kills the emotions, it kills everything within you,” a sentiment echoed in Croatian media, which ran headlines suggesting that if Matanović had been bald, the goal would have stood. Portugal’s Roberto Martínez countered that “there is no subjective opinion – the chip of the ball shows there is a touch.” The player at the centre of the incident, Matanović, later admitted he felt a slight contact with his hair and that the referee had explained the chip’s role. Analysts in Europe noted that the same technology had already been decisive in a group-stage match between Sweden and Tunisia, where a touch detected by the ball validated a goal initially ruled offside.

The result eliminates Croatia, likely ending the 40-year-old Luka Modrić’s World Cup career, and sends Portugal into a round-of-16 clash with Iberian neighbours Spain in Dallas on 6 July. For all the debate about technology’s reach, the outcome was definitive: a sensor weighing a few grams had, in a fraction of a second, rewritten the narrative of a knockout tie.