NAPLES, Italy (Interstat) — In a stunning opening-weekend upset that defied all pregame projections, Napoli delivered a commanding 3-1 victory over Inter Milan in a Serie A match Saturday at a raucous Stadio Diego Armando Maradona.

The result was a shock to the Italian football landscape, as statistical models heavily favored the visitors. Interstat’s ELO system had given Inter Milan a 97.90 percent probability of winning, while its game simulator had projected a conservative 1-1 draw. Napoli, however, rendered those numbers meaningless with a dominant second-half display.

The match, played on Oct. 25, 2025, was the season opener for both clubs in Italy’s top flight, leaving their league records at an even 0-0. The intensity of the derby was evident throughout, with three yellow cards issued in a contentious first half before any goals were scored.

Napoli’s captain, Giovanni Di Lorenzo, was the first player booked in the 43rd minute. Inter’s Billy Gilmour quickly followed with a yellow in the sixth minute of first-half stoppage time. The scoreless, yet physical, first 45 minutes gave little indication of the offensive explosion to come.

The deadlock was finally broken nine minutes into the second half, and it was the visiting side that struck first. Inter Milan midfielder Scott McTominay found the back of the net in the 54th minute, momentarily silencing the home crowd and seemingly setting Inter on the predicted path to victory.

That lead was short-lived. Napoli responded with fierce determination, equalizing just 12 minutes later. Midfielder André-Frank Zambo Anguissa scored in the 66th minute, restoring parity and re-energizing the stadium. The assist on the tying goal was credited to Di Lorenzo, the Napoli defender who had earlier been cautioned.

With the match level, Napoli seized control. The home side took the lead for the first time with a goal from midfielder Kevin De Bruyne, whose influential performance helped turn the tide decisively in Napoli’s favor. The goal put Napoli ahead 2-1 and placed Inter Milan under significant pressure.

As the visitors pushed for an equalizer, they left themselves vulnerable at the back. Napoli capitalized on this, putting the match beyond doubt with a third goal from substitute Hakan Çalhanoğlu. The goal, assisted by fellow Inter substitute Alessandro Bastoni—who was later shown a yellow card in the 77th minute—sealed a memorable 3-1 win for the Partenopei.

The victory was built on a series of key performances across the pitch for Napoli. Beyond the goal scorers, the contributions of players like Di Lorenzo, who provided a critical assist after a physical first half, were instrumental in securing the three points.

For Inter Milan, the defeat marks a shocking start to their Serie A campaign. Despite the goal from McTominay and the late assist from Bastoni, the team was unable to live up to its overwhelming favoritism, struggling to contain Napoli’s relentless midfield and attack after the break.

The final whistle confirmed a statement victory for Napoli to open their season, providing a massive boost of confidence by defeating one of the league’s presumed titans. For Inter Milan, the loss prompts immediate questions as their season begins with a unexpected and decisive setback.