Valtteri Bottas claimed pole ahead of his Mercedes team mate Lewis Hamilton, with Red Bull third and fourth. The Mercedes drivers were the only ones to select the P Zero Yellow medium tyre for their final runs in Q3, but they both set their fastest times on their first runs, using the Red soft.

During the Q2 session, which determines which starting tyres the top 10 on the grid will use, most drivers headed out on the medium, with just six starting the session on the P Zero Red soft. In the end, five drivers in the top of the grid will start on the medium tomorrow including the top four: both Mercedes, both Red Bulls, and the Ferrari of Charles Leclerc.

The gusting winds seen yesterday persisted today influencing the qualifying sessions and slowing down the track towards the end of the hour. Weather conditions were also similar to yesterday, with qualifying ending in temperatures of 19 degrees ambient and 34 degrees on track.

The 66-lap Portuguese Grand Prix is likely to be a one-stopper, for two key reasons: firstly because the time lost in the pit lane here is too costly to make a two-stopper work, and secondly because wear and degradation on all the compounds seems quite low. With the Portimao circuit being reasonably wide and presenting plenty of overtaking opportunities (as proved by last year's race) the tyre nomination here should allow the drivers to push hard and deliver a lively race. The low wear and degradation should also create quite a wide pit stop window, meaning that the teams will be able to adapt their strategies to take advantage of the best possible moment to make their stops, ensuring track position. As usual, the timing of the stops will also depend on track and air temperatures – which are likely to be similar to today, or perhaps slightly warmer.

Mario Isola: "As they did last year, Mercedes selected the medium in Q3, but this year they were unable to improve on their first Q3 run using the soft, underlining the different ways of thinking that we are likely to see tomorrow. A one-stop strategy is most probable but the teams are likely to have a few different options when it comes to the timing of the stop. Tomorrow the top 10 is split 50-50 as to which tyres they will start the race on, with those starting on the medium tyre having more tactical flexibility but those starting on the soft not at a disadvantage either. Qualifying shows that all three compounds are set to play their part in the race tomorrow, with all of them also being a valid option for the final stint, depending on individual run plans."

Check out our Saturday gallery from Portimao, here.