Postpublished at 08:57 Greenwich Mean Time
Another fast lap for Lando Norris and the McLaren goes up to the third spot. He is one tenths behind Charles Lecerc.
Three days of pre-season testing complete in Bahrain
Williams' Carlos Sainz sets quickest time overall with a 1:29.366
George Russell in the Mercedes fastest on final day
Lando Norris and McLaren top times on day one
Season-opening Australian Grand Prix takes place 14-16 March
Sunday's race starts at 04:00 GMT
Get involved: #BBCF1
Tasnim Chowdhury
Another fast lap for Lando Norris and the McLaren goes up to the third spot. He is one tenths behind Charles Lecerc.
Lando Norris is racing down the track. He was overall fastest on day one of testing.
He has about two hours of testing remaining before he hands over the keys to teammate Oscar Piastri.
Isack Hadjar has bolted on a new set of tyres and joins the pack.
He's completed 29 laps in the Racing Bulls.
Oliver Bearman is on his out lap now, looks like the team has fixed the damage on the Haas.
His race engineer has told him that the wind has picked up.
Gabriel Bortoleto is out of his car in the Sauber garage. The car has been raised up and the engineers look very busy.
There's screens ready to cover the garage, which means the team will be taking the floor off the car.
1. Charles Leclerc (Ferrari) - 1:30.811
2. Kimi Antonelli (Mercedes) +0,077
3. Max Verstappen (Red Bull) +0.631
4. Alex Albon (Williams) +0.633
5. Isack Hadjar (Racing Bulls) +0.950
6. Jack Doohan (Alpine) +1.001
7. Lando Norris (McLaren) +1.326
8. Gabriel Bortoleto (Sauber) +1.414
9. Oliver Bearman (Haas) +2.866
10. Fernando Alonso (Aston Martin) +3.010
Oh no. Lando Norris was on a push lap but runs wide. He manages to get himself back on the track without any major damage.
Lando Norris is the only driver out on the track, everyone else has taken a trip to the pits.
Fernando Alonso has taken the morning running for Aston Martin, as Lance Stroll was feeling unwell overnight.
The team have now confirmed the Canadian will return to the cockpit this afternoon to conclude the test.
Max Verstappen is back out on the track. A new set of tyres for him as he puts in more laps.
Lando Norris has now put a lap time on the board. He's jumped up to seventh spot.
His lap time is 1:32.137.
Alpine's Jack Doohan has the track to himself, the Australian has been zooming down the track.
Lando Norris and Charles Leclerc decide to join him too.
Meanwhile, there are screens blocking the Mercedes garage.
Lando Norris is taking the early shift for McLaren so Oscar Piastri is on media duties and having a chat with Sky Sports.
"I don't think anyone expected rain in Bahrain, so that was a slight spanner in the works yesterday," the Australian said of the weather conditions on Thursday.
"I think still achieved a fair bit and learned a lot. Excited to try and get a few more laps in this afternoon. I think it's all going pretty well."
On how the engineers are feeling so far, Piastri said: "I think reasonably happy, yes. We've been trying a lot of things and our programme has been going pretty smoothly, and i think we've been getting some pretty clear reads on what different changes do - which is what you want at this part of the season.
"In terms of pace, I don't really know where we see it; it's kind of hard to say. There have been some runs that have looked good and some runs that haven't looked so good; that's kind of looked the story for everybody a little bit, but I think we're still pretty confident.
"We're not going to know until we get to Melbourne, but I think the signs have been positive."
The skies are blue over the track in Sakhir, I am hoping for no rain.
Rookies Isack Hadjar, Jack Doohan and Gabriel Bortoleto have completed the most laps, 21 for the trio.
Max Verstappen has been in the Red Bull garage. There will be a range of different set-ups for the four time world champion, who will be testing for the full day.
Sauber's Gabriel Bortoleto has completed the most laps, 20 for him now.
Charles Leclerc has set the fastest time in the morning session.
Haas engineers are working on Oliver Bearman's Haas, he lost a part of the engine cover on the track.
We are one hour in, here is what the laps look like:
Max Verstappen (Red Bull) - 14
Alex Albon (Williams) - 12
Lando Norris (McLaren) - 10
Charles Leclerc (Ferrari) - 14
Andrea Kimi Antonelli (Mercedes) - 13
Fernando Alonso (Aston Martin) - 11
Jack Doohan (Alpine) - 19
Oliver Bearman (Haas) - 8
Isack Hadjar (Racing Bulls) - 16
Gabriel Bortoleto (Sauber) - 18
Alex Albon has a new set of tyres and has joined Isack Hadjar and Gabriel Bortoleto out on the track.
Eight drivers are in their garages, Ferrari's Charles Leclerc has computer screens in front of him as he looks through the data.
McLaren's Lando Norris is back out on the circuit. He oversteers as he joins the track
Chris Medland
F1 journalist in Bahrain
Finally, finally, the teams can see some sunshine, and it’s not just more comfortable from a human perspective (even though Aston Martin team boss Andy Cowell did make that point on Thursday).
The track temperature rises more significantly than the air temperature as the sun warms the surface, and that gives the teams more representative conditions for tyre behaviour.
Last night, McLaren team principal Andrea Stella referenced how unusual conditions have been so far this week, but this morning is providing a window for teams to see how their cars react as the track heats up.