Oliver Rowland is the 2024-25 Formula E world champion after a fourth-place finish in the second race of the Berlin weekend as chief title rival Pascal Wehrlein's race capitulated.
Defending champion Wehrlein had reduced Rowland's championship lead to 47 points by taking pole position earlier on Sunday, with Rowland qualifying third but starting eighth following a five-place grid penalty for causing a collision in Saturday's opening race.
And Wehrlein led large swathes of the race, the works Porsche driver trading positions in the opening laps with his team-mate Antonio Felix da Costa, the customer Kiro car of Dan Ticktum and Robin Frijns's Envision-Jaguar.
But things began to go awry for Wehrlein towards the end of his first attack mode activation - he took two minutes to begin with whereas most around him took four - as he slipped to ninth then out of the points altogether.
And he never recovered from there, finishing down in 16th.
That left all eyes on Rowland. he'd been a permanent fixture at the front of the field, cycled into the lead with both of his attack mode activations, and sat fourth by the time the entire field's activations had played out.
Taylor Barnard and Mitch Evans threatened to delay Rowland's coronation, but they lost ground scrapping with one another and Rowland was then given a huge break when a full course yellow period was activated on the penultimate lap.
Race control declared that over before the end of the lap, but by that point Rowland needed only to manage a 1.4-second gap back to Evans on the final lap - something the Nissan driver managed with ease to seal the title with two races to spare.
"Honestly I didn't expect it today," said Rowland on the cooldown lap. "Pascal was on fire this morning and all I could think about was having a big dent in the lead.
"I've been here a long time trying, it's unbelievable."
It completes a remarkable turnaround for Rowland, who two years ago was off the grid having left the Mahindra team midway through a trying first Gen3 season.
He has been a driver transformed at Nissan: Rowland won two races last year and would likely have been a title contender at the season finale had he not missed the Portland double-header through illness, but wrote any wrong there with a dominant run to the this season's title.
Nick Cassidy came through from 20th on the grid to win what was a classic high-energy, Gen3-era pack race.
That completed a clean sweep of the weekend for the Jaguar team that Cassidy will leave at the end of the season, with team-mate Evans - fifth in race two - winning Saturday's opening race.
Jake Dennis (Andretti) and Jean-Eric Vergne (DS Penske) also made big leaps, advancing from 16th and 18th respectively to finish second and third.
McLaren driver Barnard was another to star up at the front in the early running, then seemingly slumped into the midfield, only to recover to sixth.
Felipe Drugovich's seventh-place finish went under the radar but was an excellent return for the Aston Martin Formula 1 reserve, who was standing in for Nyck de Vries at Mahindra this weekend.
Fellow stand-in Sergio Sette Camara also made the top 10, scoring a point in the second works Nissan entry.