Lewis Hamilton coasted to a comfortable victory and led a Mercedes one-two finish at the Russian Grand Prix on Sunday to tighten his grip on a sixth World Championship.
In a calamitous few laps for Ferrari, the Italian team threw away a possible one-two finish of its own after Sebastian Vettel broke down and Charles Leclerc dropped from first to third.
Valtteri Bottas followed team-mate Hamilton home at the Sochi Autodrome as Mercedes secured the full quota of points.
Hamilton now leads Bottas in the championship by 73 points with just 130 remaining. Leclerc is 107 points behind the British driver.
Max Verstappen finished fourth ahead of Red Bull team-mate Alex Albon, who started last after he crashed out during qualifying.
“What an effort, guys,” said a jubilant Hamilton on the radio after the race. “What an incredible job. That is exactly what we needed. We never give up.”
Ferrari had already got themselves into a needless mess before Vettel retired with an engine failure on lap 28.
Vettel got the jump on pole-sitter Leclerc on the long drag down to the second corner but a curious pre-race arrangement had Leclerc calling for the roles to be reversed.
It appears that the team had agreed that if Vettel benefited from Leclerc’s slipstream and moved ahead of the Frenchman off the start line, he would have to concede the position.
Ferrari were on the radio to tell Vettel to let Leclerc by, but the four-time world champion resisted the order.
Leclerc protested over the radio.
“You put me behind and I respected everything,” he said. “We will talk later.”
The Ferrari pit wall were on to Vettel again, but again the German refused to let his teammate pass, fearing that he would be exposed to Hamilton in third place if he slowed down.
Leclerc was the first to stop on lap 22, but instead of calling in Vettel the next time around Vettel was left on old tires as his teammate put in several fast laps on his fresh tires.
Four laps after Leclerc pitted, Vettel was eventually called in and by the time he emerged he had fallen behind his teammate and into second place.
Just moments later disaster struck as Vettel broke down with an engine failure.