Red Bull's Max Verstappen converted pole position into a sprint race victory at the Singapore Grand Prix.
The Dutchman was beaten to the first corner by George Russell on a wet track before the Mercedes driver crashed out on the second lap.
Verstappen controlled the race from there around the Marina Bay Circuit and crossed the line 2.591 seconds ahead of Ferrari's Lewis Hamilton to take his first sprint race win of the season.
Hamilton's teammate Charles Leclerc was third-fastest with Kimi Antonelli behind in the upgraded Mercedes.
Liam Lawson rounded out the top five in the Racing Bulls.
McLaren's Oscar Piastri and Lando Norris were looking in contention to finish fourth and finish before colliding on the final lap.
Piastri was then out of the race, while Norris grabbed the final point and finished down in eighth. Both drivers were summoned to the stewards, but there was no further action.
Russell's crash was another major blow to his title hopes and he arrived to the weekend starting from the back of the grid for Sunday's race due to an engine penalty. Antonelli is leading the title championship by 89 points from Russell.
Oliver Bearman finished in sixth in the Haas, with Audi's Nico Hülkenberg in seventh.
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Six days on from the shambolic scenes in Malaysia -- where drivers were left effectively unable to power their cars on the formation lap in the wet due to a "software bug" which led to a 53-minute delay, by which time the track had significantly dried -- the start of the sprint was halted by the weather.
As the F1 circus assembled on the grid, a torrential downpour broke out causing pandemonium among the teams.
Again, race officials waited for the surface to partially dry before the race could begin, with marshals brushing water away in the opening turns -- but remarkably large chunks of the street circuit appeared to have escaped the rain altogether.
After a 30-minute delay and two formation laps behind the safety car, the sprint began.
Qualifying for Sunday's main race has been delayed by 30 minutes and will start at 2.30 p.m. BST / 9.30 a.m. ET.
Information from PA contributed to this report.