Kimi Antonelli dealt a seismic blow to George Russell's hopes of taking the world championship by passing his Mercedes teammate with just three laps remaining to win the Italian Grand Prix after he started 19th on the grid.
Home favorite Antonelli, who was way down the order after a grid penalty, took advantage of a favorable strategy, an explosive new engine and a demonstration of passing excellence, to become the first Italian in 60 years to win in Monza.
Antonelli looked as though he may have blown his chances of a stunning comeback win when he ran through the gravel at the Variante del Rettifilo as he looked to wrest the lead from Russell on the 49th lap of 53.
"What the f--- happened there," said Antonelli, who dropped 1.7 seconds behind Russell.
But on superior tires, Antonelli was soon back on Russell's gearbox and made no mistake on the following lap when he breezed past his wounded teammate -- who had started the race 17 places ahead of Antonelli -- heading into the Variante Ascari.
Antonelli crossed the line 3.8 seconds clear of Russell to extend his lead in the drivers' standings from 59 points to 66 after becoming the first Italian driver to win at Monza's Temple of Speed since Ferrari's Ludovico Scarfiotti did it in 1966.
Max Verstappen finished third, one place ahead of world champion Lando Norris. Oscar Piastri took fifth with Lewis Hamilton only sixth on a poor day for Ferrari after Charles Leclerc crashed out at 160 mph on the second lap.
- Kimi Antonelli wins Italian Grand Prix, first Italian to win in Monza since 1966 - as it happened
- Charles Leclerc suffers huge crash at Italian Grand Prix, major blow for Ferrari at home race
"Unbelievable," Antonelli said. "I never would have believed I would be here today, but I am so happy."
Russell held his nerve at the restart -- following a 30-minute red-flag period after Leclerc's crash -- to keep clear of Pierre Gasly with Antonelli making up six places from 12th.
Russell soon had Verstappen for company and the Red Bull man streaked past his English rival for the lead on the 12th lap and by the start of the next lap, Antonelli had muscled his way up to third.
A boost came for Russell two laps later when he snatched the lead back from Verstappen. But Antonelli breezed past the Red Bull driver on the next lap and was in second, remarkably, on Lap 18, the Italian led the race after seeing off Russell on the long run down to the Variante del Rettifilo.
Over the next four laps, Antonelli and Russell traded positions four times for the lead before Russell got ahead of his teammate on lap 23. Mercedes instructed both drivers to stop the "yo-yo" racing -- fearing they were allowing Verstappen back in the fight -- and Russell retained his lead.
But an opportunity for Antonelli arrived on Lap 28 when Lance Stroll broke down in his Aston Martin and the Virtual Safety Car was deployed. Antonelli, on the less durable medium tyre, was called in by Mercedes for a pit stop. Russell, despite being the leading car, was on the harder compound and left out. And so the race begun.
Antonelli was 14 seconds behind when he left the pits and with 10 laps to go Russell's advantage had been trimmed to just five seconds. Russell was looking increasingly vulnerable.
"Just let me drive," Russell said over the radio. "I am driving as quick as I can."
The British driver was told to take "no risks" with his tyres and Antonelli was in striking range. Antonelli thought he lost his chance when he ran through the sand trap with four laps to go but he got his man the next time around to secure a stunning fightback win -- his seventh of the season.
Earlier, Leclerc lost control of his car on the exit of the high-speed Curva Parabolica as he duelled with McLaren's Oscar Piastri in the opening stages.
The Monégasque flew through the gravel before thudding into the tire barrier and sustaining significant damage at the end of the second lap.
Leclerc was seen sitting on the grass in apparent pain, appearing to indicate to the medical staff that he had hurt his neck.
Leclerc waved to the crowd -- with some of the Tifosi in tears -- before he was taken away to the on-track medical center and then given the all-clear.
Hamilton was as high as third at one stage but had to settle for sixth to leave the seven-time world champion 76 points off the title pace with 10 scheduled rounds remaining.
