First day of the second F1 test
Problems for McLaren and Mercedes bring out red flags
Testing Tuesday, Wednesday, Thursday and Friday in Barcelona this week
Alfa Romeo of Giovinazzi tops morning session
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That's the end for today's action and there is more testing from 08:00 GMT on Wednesday.
We'll be up and running from 07:45 GMT tomorrow so hopefully see you then. Look out for our report on the Formula 1 home page shortly.
Thanks for your company and until tomorrow, bye for now.
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Lando Norris twice had to be recovered from the track, yet in between those incidents banged in the fastest time of the day with a 1:17.709
Image source, F1Valtteri Bottas goes 11th, faster than team-mate Lewis Hamilton and Nico Hulkenberg.
There aren't going to be many times this season where the bottom two will be Hamilton and Hulkenberg. But that's what's happening today.
A late surge to keep us all on the edge of our seats. Daniel Ricciardo to squeeze in a couple of late ones.
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Bottas has a time on the board, a 1:20.719, which keeps him last, but five minutes remaining for a few more.
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Stephen Knipe: Lando makes rookie mistake of trying to go fast in McLaren that wasn't designed for speed!
With eight minutes to go, Valtteri Bottas, after an oil pressure problem that has ruined his day, is back out for a small amount of laps, heading out on the C2 (second hardest) tyres).
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We're good to go again for a 10-minute blast to round off the day.
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Rachel's in Barcelona and sent us this picture of Lando Norris' McLaren being hauled back in.
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Why is it always good news, bad news for McLaren?
Lando Norris has gone fastest but stops just coming out of the pits at Turn 2 with a potential mechanical issue.
Bob wrote this 13 minutes ago...
Bob McFeil: If Lando Norris sets another timed lap today, I’ll eat my sock.
Socks. Chewy.
McLaren fans, you've waited a long time for good news, and Lando Norris is at the top of the times.
Yes, yes, he's on the softest tyre possible, but he is there at the top thanks to a lap of 1:17.709.
Image source, Getty ImagesMcLaren fans, sit down.
The F1 timing screen appears to have had enough and given up for the day with the screen not updating for a while.
In the meantime, Lance Stoll, on the C4 (second softest) tyres has moved second and Lando Norris on the softest C5 tyres has gone fourth.
Lando with a late blast in his McLaren.
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