Get Involvedpublished at 13:09 British Summer Time 27 September 2019
JJ Jackson: re doping, am i being naïve? They spend millions for fractions of a second, surely someone would have tried drugs for an advantage?
Verstappen fastest in second practice, Hamilton nearly crashes into Albon
Leclerc fastest in first practice, Kvyat breaks down at home race, Ricciardo crashes
Get involved #bbcf1
Niamh Lewis
JJ Jackson: re doping, am i being naïve? They spend millions for fractions of a second, surely someone would have tried drugs for an advantage?
Who are your top drivers this year? Who's hot and who's not?
Get involved with #bbcf1.
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"We have anti-stall on the kerb."
Drivers are out on install laps, and Norris, Kvyat, Sainz, and Perez have set lap times.
No damage to Daniil Kvyat's power unit, and he is back out on track.
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I forget, what practice session are we on now?
Two you say?
Right, cheers Alex...
Andrew Benson
BBC Sport’s chief F1 writer
Governing body the FIA has this morning withdrawn its plans to introduce standard brake systems as part of the raft of changes in the 2021 rules package.
This might sound arcane and even a little boring, but actually it is a significant moment, because it is a win for Ferrari and the big teams in the ongoing battle over the rule changes,about which they have a number of concerns, especially their prescriptive nature.
The deadline for the technical and sporting regulations to be published is 31 October, and it is far from clear at this stage whether the FIA and F1 Group are going to be able to introduce the major changes they want, which are aimed at making the cars able to race more closely together by introducing a new aerodynamic philosophy.
Ferrari, Mercedes and Red Bull would prefer the rules stayed more or less the same, claiming that F1 is trying to do too much at once, and that there is too big a risk of something going wrong.
Watch this space.
Russia could face a ban from all major sports events over "discrepancies" in a lab database, the World Anti-Doping Agency has warned.
The country has been given three weeks to explain "inconsistencies" or risk being excluded from the Olympics and world championships.
Russia also faces being barred from hosting major events.
"There's evidence this data has been deleted," chairman of Wada's compliance panel, Jonathan Taylor, told BBC Sport.
"We need to understand from the Russian authorities what their explanation is."
BBC Radio 5 Live Sports Extra
Jack, Jolyon, Claire, and Andrew will be back on BBC Radio 5 live sports extra and at the top of the page from 12:55 for second practice at 13:00 BST.
I'm a big fan of Kimi Raikkonen's life strategy: "I didn't really have a plan and still don't... As long as we enjoy, we will keep racing."
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Daniel Ricciardo crashed into the barriers at the end of first practice.
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He even has a grandstand named after him.
Kvyat is one of three Russian F1 drivers, alongside Vitaly Petrov and Sergey Sirotkin, and he talks through a lap at the Sochi Autodrom.
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Mercedes have repaired Bottas' rear wing, so he's ready to go again for FP2 at 13:00 BST.
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FP1 has been a bit dull really, so here's a dog playing the piano.
See you soon.
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The session was already over, all he had to do was return to the pitlane... so Renault may not be happy about that. The rear wing is hanging off looking sorry for itself after he spun into the barriers at Turn 10.
"Go very steady, the rear wing is hanging off" the engineer says to Ricciardo.
"Your rear wing has failed. Box box" the team say over the radio.