Postpublished at 12:43 Greenwich Mean Time 28 February
Alex Albon has hopped back into his Williams seat. 59 laps for him so far from the morning session.
Summary
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
Postpublished at 12:43 Greenwich Mean Time 28 February
Postpublished at 12:39 Greenwich Mean Time 28 February
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.
Postpublished at 12:35 Greenwich Mean Time 28 February
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.
Laps completedpublished at 12:33 Greenwich Mean Time 28 February
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
Postpublished at 12:30 Greenwich Mean Time 28 February
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.
Gasly fastest overallpublished at 12:27 Greenwich Mean Time 28 February
Pierre Gasly was on a flying lap and what time did he clock in?
1:30.657, the fastest overall on day three.
Postpublished at 12:24 Greenwich Mean Time 28 February
Lewis Hamilton is slowly creeping up the leaderboard.
In his first afternoon session, the seven-time world champion jumps up to 10th spot, with seven laps completed.
Postpublished at 12:20 Greenwich Mean Time 28 February
Aston Martin's Lance Stroll, McLaren's Oscar Piastri and Sauber's Nico Hulkenberg are yet to start their testing session.
Postpublished at 12:19 Greenwich Mean Time 28 February
Ocon and Gasly have completed seven laps, Yuki Tsunoda is on five, Lewis Hamilton has clocked in three laps.
George Russell has joined the track for testing.
Postpublished at 12:17 Greenwich Mean Time 28 February
Esteban Ocon has set a lap time in the Haas and goes 10th fastest.
Pierre Gasly's Alpine jumps up to sixth overall, his time is 1?31.406.
Postpublished at 12:14 Greenwich Mean Time 28 February
The session has been green flagged. Time to get going again.
Pierre Gasly, Esteban Ocon and Yuki Tsunoda are back out on track.
Lewis Hamilton joins them in the Ferrari.
Postpublished at 12:12 Greenwich Mean Time 28 February
We have seen it all this pre-season testing.
Power cut, rain in Bahrain and a shuttle bus on the track.
Postpublished at 12:10 Greenwich Mean Time 28 February
Esteban Ocon and Pierre Gasly head back into the pitlane.
As does Yuki Tsunoda, who had just left the garage when the session was red flagged.
Red flagpublished at 12:08 Greenwich Mean Time 28 February
A red flag has been waved.
There's a shuttle bus near the track!
Postpublished at 12:06 Greenwich Mean Time 28 February
Lewis Hamilton will be in the Ferrari seat for the afternoon session. He was spotted chatting to Carlos Sainz during the break between sessions
Image source, Getty ImagesPostpublished at 12:04 Greenwich Mean Time 28 February
The drivers are making their way out onto the track.
Esteban Ocon is the first out, followed by his former teammate Pierre Gasly.
But, the Aston Martin garage has been blocked off.
Afternoon line-uppublished at 12:02 Greenwich Mean Time 28 February
Oscar Piastri - McLaren
Lewis Hamilton - Ferrari
George Russell - Mercedes
Max Verstappen - Red Bull*
Yuki Tsunoda - Racing Bulls
Pierre Gasly - Alpine
Alex Albon - Williams*
Lance Stroll - Aston Martin
Esteban Ocon - Haas
Nico Hulkenberg - Sauber
*All day
Welcome backpublished at 12:00 Greenwich Mean Time 28 February
Hello again.
Are we all ready for the last session of testing?
Max Verstappen and Alex Albon continue their full day of testing. Who else joins them?
Back at 12:00 GMTpublished at 11:05 Greenwich Mean Time 28 February
Time for a break.
We will be back at 12:00 GMT for the last session in pre-season testing.
See you then!
Chequered flagpublished at 11:04 Greenwich Mean Time 28 February
The morning session is now done and dusted.
Charles Leclerc was the fastest driver. Isack Hadjar completed the most laps.