Sweden Triumphs 5–1 Over Tunisia: A Goal Decided by VAR

In a World Cup already drenched in data, Sweden’s fourth goal against Tunisia on Sunday night was decided not by a linesman’s flag or a referee’s instinct, but by the faintest spike on a screen.

Mattias Svanberg had been on the pitch for just 18 seconds when he swept in Yasin Ayari’s free-kick to cap a 5-1 win. The assistant’s flag went up immediately. Offside. Routine, it seemed.

Then everything stopped.

Sweden’s bench erupted, players surrounding the referee, insisting there had been a touch in the middle. The VAR team went to work. What followed was a glimpse of football’s present – and its future.

The goal that turned on a waveform

The free-kick was whipped in by Ayari. As the ball flashed across the area, Sweden and Liverpool striker Alexander Isak stretched out a boot. To the naked eye, he appeared to miss it. The ball carried on, Svanberg finished, the flag went up.

But the match ball was not just leather and stitching.

The Trionda ball, created by Adidas for this World Cup, carries a microchip at its core. Every contact – boot, head, hand – sends data in real time to the Video Assistant Referee. In this case, that data became decisive.

On the VAR screen, a flat waveform suddenly flicked. As the ball passed Isak’s outstretched right boot, the sensor registered a tiny spike, indicating a touch so slight it barely altered the ball’s path. That touch, though, reset the offside line.

When Ayari struck the free-kick, Svanberg stood beyond the last defender. When Isak grazed the ball, Svanberg had stepped back into an onside position. Under the laws of the game, the goal had to stand.

“It is a good finish by Svanberg, but I can understand why the Tunisian players will be disappointed because when you look at it, it didn’t look like there was a touch,” former Republic of Ireland striker Clinton Morrison said on BBC Radio 5 Live. “It must have been the slightest touch off the outside of his right boot. Credit to VAR, credit to the referee. They got it spot on.”

On the pitch, Sweden celebrated a fourth goal. On the touchline, Tunisia were left staring at a graphic, a spike, and a decision they could not argue with, even if they did not like it.

From cricket’s ‘Snicko’ to football’s connected ball

For cricket fans, the concept is familiar. For years, “Snickometer” – or “Snicko” – has helped umpires decide whether a batter has edged the ball. Slow-motion replays run alongside a sound waveform; a sharp spike at the moment the ball passes the bat suggests contact.

Football has borrowed the idea and built it into the ball itself.

Adidas’ Connected Ball Technology turns the Trionda ball into a live data source. The chip inside tracks every touch and sends the information instantly to the VAR team. The company says it “enables faster in-game officiating decisions and more insight into gameplay than ever before.” On nights like this, that claim feels justified.

When Svanberg’s goal was reviewed, the broadcast replay didn’t just show players and lines. It showed that same flat-line graphic, then the sudden spike as the ball brushed Isak’s boot. That was enough. The on-field decision changed, the scoreboard moved to 4-1, and a World Cup match became another exhibit in football’s technological evolution.

This is not the first time the system has settled an argument.

At the 2022 World Cup in Qatar, the same technology decided a debate that involved two of the game’s biggest names. Bruno Fernandes’ cross against Uruguay flew into the net, with Cristiano Ronaldo claiming the final touch. The celebration told its own story; Ronaldo wheeled away as if he had scored. The connected ball data said otherwise. No touch. Goal awarded to Fernandes.

At Euro 2024, Belgium felt the sting from the other side. Romelu Lukaku thought he had levelled against Slovakia, only for a review to show teammate Lois Openda had handled the ball in the build-up. Again, the technology cut through the chaos. Again, a goal disappeared.

Cricket’s original ‘Snicko’ and the race for precision

The roots of all this sit on a very different field.

Snickometer emerged in cricket in the mid-1990s, the work of English computer scientist Allan Plaskett. It synced video with audio to show whether the ball had kissed the edge of a bat. Frame-by-frame pictures, a sound trace, a spike at the crucial moment – and a batter walking back to the pavilion.

It became a staple of TV coverage and a tool in decision-making. Yet even that system has had its controversies.

During the 2025-26 Ashes series, Australian batter Alex Carey survived a crucial moment in the third Test when he was given not out after a review involving Snicko. Officials later put it down to “human error” by the operators. Carey, on 72 at the time, went on to score 106 in Adelaide. One missed spike, one hundred on the board, one series tilted.

Cricket has started to move on. Snickometer, which operates at 340 frames per second, is being phased out in some countries in favour of more advanced tools such as UltraEdge, which offers higher resolution and greater accuracy. It is no longer used in Tests in England, though it still features in Australia and New Zealand.

Football, by contrast, is only just beginning to explore what this level of precision can do. The connected ball outstrips traditional systems for speed and detail, feeding VAR with information that would have been unimaginable even a decade ago.

On Sunday night, that meant a substitute’s goal stood because of a microscopic brush off a striker’s boot. Tunisia’s defenders stepped up, thought they had their line right, and watched technology overturn their victory over the flag.

The question now is not whether football will lean on these tools. It already does. The real issue is how far the game is willing to let the data decide – and how many more nights will be defined by a single, lonely spike on a screen.