George Russell set the fastest lap in Baku, 1:42.526, claiming Mercedes' fifth pole of the season and his first since the Austrian Grand Prix in June.
Charles Leclerc finished second, 0.837 seconds behind. Max Verstappen was eighth, while Carlos Sainz took ninth after reaching Q3 for the first time in 2026.
Franco Colapinto completed the top ten. In the provisional order, Sainz sits behind Verstappen and ahead of the Argentine. Reuters confirmed Russell's pole, while ESPN and Grandprix reported his 1:42.526 lap. They described his 0.837-second margin over Leclerc as one of Baku's biggest pole-winning gaps in recent years.
The order could still change. Stewards are investigating Sainz over a possible yellow-flag infringement. No penalty had been announced in the supplied information, leaving his ninth-place start subject to the stewards' decision.
Mercedes controlled the decisive phase, despite Russell's teammate being absent. None of the leading drivers beat the benchmark on the final laps, so Russell's 1:42.526 remained the session's fastest time.
The published qualifying classification lists Sainz at 1:44.566, behind Verstappen and ahead of Colapinto. BBC listed the top ten in this order: Russell, Leclerc, Piastri, Hadjar, Norris, Hamilton, Gasly, Verstappen, Sainz and Colapinto. The closing phase's pace and incidents both shaped the order.
Yellow flags shaped the final minutes. Lando Norris ran into the escape area at Turn Five after another yellow flag and could not improve his time. Colapinto also triggered a yellow flag, but recovered the car and remained in contention before finishing tenth.
BBC and ESPN both said yellow flags heavily affected the final phase. Speed alone did not decide the session.
Russell called his lap exceptionally clean and said the car felt very strong. He also said Verstappen had been quick throughout the weekend, making the Dutchman's eighth-place result a sharp contrast with his earlier pace.
RacingNews365 described Russell's advantage as the biggest pole margin since the 2023 Canadian Grand Prix.
Sainz reached Q3 for the first time this season and made the top ten, but the investigation leaves his result unsettled. Fernando Alonso also had a difficult weekend. He qualified nineteenth and will start from the back after a penalty for changing numerous power-unit components. Aston Martin's driver so has the lowest grid position among the Spanish competitors, while Sainz remains the only Spanish driver in the top ten.
The changing conditions in Barcelona's weather report offer a clear contrast. In Baku, lap execution and race control shaped the result more than a settled running order.
Russell seized the chance. Leclerc could not close the gap, and Verstappen fell to eighth. Mercedes has the front-row advantage, Ferrari starts alongside it, and Red Bull faces a recovery from eighth. Sainz has made progress, but his starting place still depends on the stewards' decision.