Raikkonen fastest in second practice, Hamilton 2nd, Vettel 5th
Get involved #bbcf1: favourite Alonso memories, and thoughts on Ricciardo's performance
Vettel fastest in first practice, Verstappen 2nd, Hamilton 3rd
Kayleigh: Hoping for a Vandoorne drive at McLaren next year! Fave Alo memory would have to be all the radio sass ‘the engine feels good, much slower than before. Amazing’ is a personal favourite.
Carl Ford: Who will partner Sainz at McLaren? I'd like to see McLaren keep Stoffel as I think he's talented, plus it gives consistency. However, Lando needs an F1 seat.
Jennie Gow
BBC Radio 5 live pit-lane reporter
Daniel Ricciardo is not in the car still. The team are saying he has got an engine injector issue.
Vettel now fastest! With the fastest middle sector so far and on the soft tyres, giving him a 1:44.358.
Image source, Getty Images
Jolyon Palmer
Former Renault driver on BBC Radio 5 live
Lando Norris is already looking very accomplished. He has been around that midfield, he looks like he can hustle the car, he can handle this car around this track and that is a very encouraging sign inside 45 minutes of your FP1 debut. He has nothing to lose, he is the young prodigy who has a chance to impress.
Stoffel Vandoorne is the man who is under pressure, he has been behind Fernando Alonso most of the time and now he has a young challenger.
Hamilton leads, followed by Raikkonen and Bottas in the 1:44's, Verstappen, and Vettel with a 1:45.475, and 1:46.074.
Image source, Getty ImagesSirotkin is out, just Daniel Ricciardo to get in the car now.
Image source, Getty ImagesJolyon Palmer
Former Renault driver on BBC Radio 5 live
It is a chance for Norris to prove what he can do and for Vandoorne it is a chance to stamp his authority over Norris.
There is a lot of pressure, add in a bit of an Esteban Ocon (to McLaren) rumour.
Image source, Rex Features#bbcf1
Kayleigh: "Ooh a female name at the top of the #BBCF1, external text commentary page. Yay for more ladies"
Thanks Kayleigh. I'm one of three females on the BBC F1 team (including Jennie), apparently the first female F1 live text commentator since 2011, and I'm the youngest ever!
Daniel Ricciardo, Stoffel Vandoorne, and Sergey Sirotkin are yet to set times. Ricciardo and Sirotkin have both had issues. With 49 minutes to go, there's plenty of time left in FP1.
Image source, Getty ImagesJennie Gow
BBC Radio 5 live pit-lane reporter
Sirotkin is just getting into the car again. They just needed to do a pedal adjustment. Both Williams drivers are now in the cars.
Mercedes leading the way... Hamilton with a 1:44.676, and Bottas three tenths behind.
Image source, Getty ImagesJennie Gow
BBC Radio 5 live pit-lane reporter
Red Bull are looking at Daniel Ricciardo's car. We know it is not a water issue, but we know it is something wrong with the engine, with the team working furiously around the rear of the car.
Tracey Pankhurst: Really feel for RP Force India. I can understand, for business reasons, why Renault, McLaren and Williams forced this situation for them losing their points but I wish there could’ve been some camaraderie between the teams!
Image source, .Get in touch with us using the hashtag #bbcf1 on Twitter.
#bbcf1
Today I want to hear your thoughts on what happened over the summer break.
What do you think about Gasly and Verstappen?
Who will partner Sainz at McLaren?
And what are your favourite Alonso memories?
Tweet us at #bbcf1
Hamilton radio: "Bits of rain".
Is it too early to preempt a dramatic wet race on Sunday?
Raikkonen is quickest so far, followed by Bottas, Vettel, Verstappen and Hulkenberg.
Image source, Getty ImagesLando Norris: "Can you give me some feedback, if possible, against Vandoorne?"
Team Radio: "Very good start, keep going!"
Jolyon Palmer
Former Renault driver on BBC Radio 5 live
It is a shame for Bottas that he is taking a grid drop, but for it to happen at this track is not too bad. It is a track where you can overtake.
Andrew Benson
BBC Sport’s chief F1 writer at Spa
Mercedes are making some changes here - both cars are running new Power Units.These are also of a new, upgraded specification. Lewis has three new elements, including the MGU-H energy recovery part (his third of the season). Valtteri has a complete new Power Unit, with all six elements fresh. As this goes beyond his permitted allocation for the season, grid penalties will be incurred for Bottas.
Mercedes customer teams are also running new PUs of the same upgraded spec.
"We have some rain."