Max Verstappen declared "the fight is not over" as Red Bull head to Singapore this week having been knocked off the top of the constructors' world championship for the first time in two-and-a-half years.
McLaren leapt into a 20-point lead after Oscar Piastri's masterful victory at the Azerbaijan Grand Prix was compounded by Sergio Perez's late tangle with Carlos Sainz that ended with both in the wall.
McLaren's Lando Norris, who carved his way to fourth place after starting 15th on the grid, is hunting down the Dutchman Verstappen at the top of the drivers' standings.
The triple world champion's lead has been reduced to 59 points with seven grands prix and three sprints to go, leaving a maximum of 207 points up for grabs.
Verstappen won seven of the first 10 races this season but he has not triumphed in the last seven as McLaren, Ferrari and Mercedes have all taken race wins.
Red Bull's influential adviser Helmut Marko said after Baku that they have no chance of retaining the constructors' championship, but Verstappen has not conceded yet.
"We are going to work together as a team and the fight is not over," declared Verstappen after coming fifth.
"You win or lose as a team and we won't give up. It is as simple as that."
But history suggests that Verstappen's fortunes are unlikely to see an uptick around the unpredictable Marina Bay Circuit this weekend.
Red Bull have consistently struggled under the lights in Singapore.
It was the only race Red Bull failed to win last year, Ferrari's Sainz taking the chequered flag to deny Verstappen a record-extending 11th consecutive GP victory. Norris was second.
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