Postpublished at 13:27 Greenwich Mean Time
Ferrari's Lewis Hamilton is back out on the track and putting in the laps. He's on a new set of medium tyres.
Max Verstappen is back in the Red Bull garage.
Final day of pre-season testing in Bahrain
Max Verstappen improves lap time to go quickest once again
Ferrari's Charles Leclerc tops morning running
Broken glass on start-finish line and bus in run-off area cause red flags
Oliver Bearman forced to pit after losing part of Haas engine cover
Verstappen in car all day for Red Bull
Season-opening Australian Grand Prix takes place 14-16 March
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Tasnim Chowdhury
Ferrari's Lewis Hamilton is back out on the track and putting in the laps. He's on a new set of medium tyres.
Max Verstappen is back in the Red Bull garage.
Max Verstappen and Alex Albon are the two drivers out on the track.
They're both running a full day of testing.
1. Pierre Gasly (Alpine) - 1:30.040
2. George Russell (Mercedes) +0.014
3. Lewis Hamilton (Ferrari) +0.561
4. Charles Leclerc (Ferrari) +0.771
5. Oscar Piastri (McLaren) +0.787
Max Verstappen is back out on the track, it's not a great lap for the Red Bull driver and he looks like he's shaking his head. He goes for another lap.
Lance Stroll comes in for an Aston Martin pitstop, Yuki Tsunoda's car is having work done to it in the Racing Bulls garage.
Pierre Gasly is on a fast lap and jumps back to the top spot, it's a 1:30.040 for him.
Oscar Piastri (McLaren) - 12
Lewis Hamilton (Ferrari) - 15
George Russell (Mercedes) - 20
Max Verstappen (Red Bull)* - 47
Yuki Tsunoda (Racing Bulls) - 26
Pierre Gasly (Alpine) - 18
Alex Albon (Williams)* - 77
Lance Stroll (Aston Martin) - 13
Esteban Ocon (Haas) - 24
Nico Hulkenberg (Sauber) - 15
*All day
Four-time world champion Max Verstappen is getting ready to head out for his afternoon session.
Lewis Hamilton sets personal best times in all three sectors and jumps up to P3, his lap time is 1:30.601.
George Russell has paid a visit to the Mercedes pit and got himself a set of new medium tyres.
Oscar Piastri has set a lap time and is 11th fastest, he's clocked in 10 laps.
Engineer: "Wind has picked up"
Tsunoda: "Yeah wind has picked up a lot"
George Russell is on a flying lap, can he go faster than Pierre Gasly?
Yes, he can. It's a 1:30.054 for him.
At the Red Bull garage, Max Verstappen's car has been raised and there's engineers all around the car.
Pierre Gasly sets the fastest time overall in sector one and two.
Lewis Hamilton runs wide into turn five.
George Russell and Nico Hulkeberg get a little too close out on track but there is no contact.
The Ferrari and Mercedes are now back in the pitlane.
Esteban Ocon has been putting in the laps in his Haas and goes up to the sixth spot. His lap time is 1:31.199.
Lewis Hamilton has set his personal bests in all three sectors. It's not fast enough to top Pierre Gasly's time. He stays out on the track.
His former teammate George Russell has just done a flying lap in the Mercedes and goes third fastest, three tenths behind Gasly.
Andrew Benson
BBC F1 correspondent
Lewis Hamilton said he was "really enjoying" his new Ferrari as he set the second-fastest time on day two of pre-season testing in Bahrain.
The seven-time champion, who has moved to the Italian team this year after 12 seasons with Mercedes, was pipped to fastest lap by 0.031 seconds by Williams' Carlos Sainz.
Hamilton said: "I am really enjoying the car. We're slowly bonding. Yesterday was a so-so day, just OK. But we got through all our run-plan. I was not doing set-up changes or directing where I want the car to go.
"Today was a bit more getting to explore a bit my interaction with my engineer."
Alex Albon has hopped back into his Williams seat. 59 laps for him so far from the morning session.
Haas' Esteban Ocon has been out on the track and heads back into the garage.
Racing Bulls Yuki Tsunoda is also back in the pitlane.
McLaren man Oscar Piastri heads out for his first lap of the session.
Lance Stroll has just joined the track.
Meanwhile, that Alpine is rapid. Pierre Gasly has just gone fastest again and improves his lap time to 1:30.459.
Lewis Hamilton (Ferrari) - 7
George Russell (Mercedes) - 9
Max Verstappen (Red Bull)* - 47
Yuki Tsunoda (Racing Bulls) - 7
Pierre Gasly (Alpine) - 12
Alex Albon (Williams)* - 58
Esteban Ocon (Haas) - 12
Nico Hulkenberg (Sauber) - 3
*All day
Our full day testers Max Verstappen and Alex Albon haven't started their afternoon session yet.
Let's have a look at the laps completed so far.
Pierre Gasly was on a flying lap and what time did he clock in?
1:30.657, the fastest overall on day three.