Formula 1 testing - day one as it happened

Summary

Ricciardo finishes fastest
McLaren brings out first red flag of session
Alonso returned to track just before lunch
First pre-season test ahead of 2018 season
Sum up something in F1 with a GIF #bbcf1

Live Reporting

Gary Rose

More to come from McLaren?published at 16:23 Greenwich Mean Time 26 February 2018
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Postpublished at 16:15 Greenwich Mean Time 26 February 2018
Image source, Force India
Low track and air temperatures now, which explains the lack of running.
Some journalists use the lull in activity as an opportunity to interview the drivers not taking part in the session.
Postpublished at 16:08 Greenwich Mean Time 26 February 2018
The on-track hokey cokey continues with Daniel Ricciardo the only driver on the circuit at the moment.
Latest timespublished at 16:06 Greenwich Mean Time 26 February 2018
1) Ricciardo (Red Bull) 1:20.179 Medium 85 laps
2) Bottas (Mercedes) - 1:20.349 Medium 58 laps
3) Raikkonen (Ferrari) - 1:20.506 Soft 80 laps
4) Hulkenberg (Renault) - 1:20.547 Medium 73 laps
5) Alonso (McLaren) 1:21.327 Super-soft 40 laps
6) Sainz (Renault) 1:22.168 Soft 26 laps
7) Hamilton (Mercedes) - 1:22.327 Medium 25 laps
8) Hartley (Toro Rosso) 1:22.371 Soft 93 laps
9) Stroll (Williams) 1:22.452 Soft 46 laps
10) Grosjean (Haas) 1:22.578 Soft 54 laps
11) Ericsson (Sauber) 1:23.408 Soft 63 laps
12) Mazepin (Force India) 1:25.628 Medium 22 laps
13) Sirotkin (Williams) 1:44.148 Soft 21 laps
Get involved #bbcf1published at 15:58 Greenwich Mean Time 26 February 2018
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Careful, Kayleigh. The day is not over yet...
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Postpublished at 15:56 Greenwich Mean Time 26 February 2018
Fernando Alonso is also back out.
Suddenly we've gone from a quiet drive in the countryside to the M6 at rush hour.
Postpublished at 15:55 Greenwich Mean Time 26 February 2018
Brendon Hartley has also fired up the Honda engine in the Toro Rosso and joined Carlos Sainz on the track.
Hartley is nine laps away from 100 for the day.
Happy days for Honda.
Postpublished at 15:53 Greenwich Mean Time 26 February 2018
Now then. No hope followed by disappointment this time as Carlos Sainz does one lap... and another... and another! He's sticking around as he improves with 1:22.168. That takes him up to sixth.
Postpublished at 15:48 Greenwich Mean Time 26 February 2018
Carlos Sainz you wonderful human!
The Spaniard has broken the silence and gone out in the Renault.
Just the 20 laps for Sainz so far this afternoon with his time of 1:22.621 the 10th quickest of the day.
Get involvedpublished at 15:45 Greenwich Mean Time 26 February 2018
Sum up something in F1 in a GIF
YES!
In fact, the whole #bbcf1 timeline is full of appropriate gifs. I need to hold some back because I'm increasingly concerned we might not see any cars for a while.
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Postpublished at 15:36 Greenwich Mean Time 26 February 2018
Kimi Raikkonen puts in the briefest of appearances before heading back in. Track silent again.
But then Sergey Sirotkin heads back out... but only for one lap. Track silent once again.
Can anyone provide a GIF that expresses hope quickly followed by disappointment? That's how I'm feeling right now with these fleeting appearances.
Which one is which?published at 15:34 Greenwich Mean Time 26 February 2018
I think we can all empathise with Chris on this one!
Especially as my eyesight isn't particularly dazzling...
Image source, Getty Images
Image source, Getty Images
Get involvedpublished at 15:31 Greenwich Mean Time 26 February 2018
#bbcf1 or text in on 81111 (UK only)
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Postpublished at 15:29 Greenwich Mean Time 26 February 2018
An orange car has made way for a red car as Fernando Alonso's McLaren comes in while Kimi Raikkonen's Ferrari heads back out.
Alonso's times were not great in the ultra-softs as he failed to improve on the 1:21.327 he did on the super-softs.
Get involved #bbcf1published at 15:23 Greenwich Mean Time 26 February 2018
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Postpublished at 15:22 Greenwich Mean Time 26 February 2018
Just one car on the track - Fernando Alonso's McLaren which is now on the ultra-soft compound of tyre.
Postpublished at 15:20 Greenwich Mean Time 26 February 2018
Honda-powered cars managed just 425 laps across the entire eight days in testing last year. They are already on 90 on day one so well on course to surpass that total.
Image source, F1.com
Postpublished at 15:13 Greenwich Mean Time 26 February 2018
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Get involved #bbcf1published at 15:12 Greenwich Mean Time 26 February 2018
Sum up something in F1 in a GIF
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Latest timespublished at 15:11 Greenwich Mean Time 26 February 2018
1) Ricciardo (Red Bull) 1:20.179 Medium
2) Bottas (Mercedes) - 1:20.349 Medium
3) Raikkonen (Ferrari) - 1:20.506 Soft
4) Hulkenberg (Renault) - 1:20.547 Medium
5) Alonso (McLaren) 1:21.327 Super-soft
6) Hamilton (Mercedes) - 1:22.327 Medium
7) Hartley (Toro Rosso) 1:22.371 Soft
8) Stroll (Williams) 1:22.452 Soft
9) Grosjean (Haas) 1:22.578 Soft
10) Sainz (Renault) 1:23.070 Medium
11) Ericsson (Sauber) 1:23.408 Soft
12) Mazepin (Force India) 1:25.628 Medium
13) Sirotkin (Williams) 1:44.148 Soft