Hamilton wins from Leclerc after Ferrari loses power
Vettel spins and loses front wing
Vettel overtakes Leclerc at start, but Ferrari team-mate retakes lead
Grosjean, Ricciardo, Hulkenberg out
Lap 11/57
So, at least there's been no team orders. Great stuff. A frantic, chaotic opening 11 laps. Let's hope it all stays as dramatic.
Who's your money on in this one? Tell us via #bbcf1
Image source, Getty ImagesSara: Great work from Leclerc. Lap 5 - Excitement!
Obi: This is what we have been asking for, what a great start!
Joanna: Wow this is stressful, but great fun! Some brilliant battles out there.
We agree Joanna - we love the battles out on track!
Lap 10/57
Pierre Gasly comes into the pits, on an aggressive two-stop strategy, but it's not the best of stops. Gasly's mechanics were the quickest in Australia, not this time.
Lap 10/57
Under investigation flashes on the screens, and it is that coming together between Max Verstappen (fifth) and Carlos Sainz (20th). As soon as we know, you'll know.
Lap 9/57
The Hulk started 17th and is now running eighth. Superb fightback.
Three drivers have changed tyres
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Engineer: "How is the front wing?"
Raikkonen: "I don't know you're going to have to tell me."
Beautifully grumpy from Raikkonen, whose team radio is always a treat.
Rachel: Well we all cheered Charles nailing Seb VERY loudly! Game on!
Reece: @Charles_Leclerc, external could dominate F1 for years. The guy is special.
Jeremiah: Did Bottas overcook his start? Looks like he is struggling.
Lap 8/57
You get a point for the fastest lap, if you come in the top 10, Sainz, fresh from a pit stop, is the fastest lap holder at the moment. Although he's last so no bonus point coming his way just yet.
Jolyon Palmer
Former Renault driver on BBC Radio 5 live
Sainz pinched him into the apex, Verstappen tried to avoid, but I think Sainz put himself in a bit of a dodgy position there.
Lap 7/57
We have a reason for Carlos Sainz's problems, a collision with Max Verstappen from the side. Verstappen has been unharmed by the incident, Sainz is still in the race but at the back.
Image source, Getty ImagesLap 7/57
We've not mentioned Danny Ric yet, and he's bumped himself up to seventh after starting 10th.
We're seeing what happened at the back off the start with Lance Stroll and Romain Grosjean bumping into each other.
Stewart: And with that overtake by Hamilton, Bottas' title challenge ends.
Bernie: This Ferrari pace is genuine! If they can maintain this form till Europe, I think is game over for the rest.
Ash: Leclerc must stay calm - lets go Ferrari.
Leclerc. First, third, second, first. Eventful.
Image source, Getty Images
Jack Nicholls
BBC Radio 5 Live F1 commentator
It's silence on the Ferrari team radio there as Leclerc declares he's quicker...
Lap 5/57
Jolyon Palmer
Former Renault driver on BBC Radio 5 live
Oh Carlos Sainz, it was looking so good to get around the outside of Verstappen but he's such a difficult man to pass.
Lap 5/57
Sebastian Vettel has a lead of 0.7 seconds over Charles Leclerc. We had a Mercedes one-two in Australia, now we've got a Ferrari one-two in Bahrain. Brilliant stuff.
Lap 5/57
Jolyon Palmer
Former Renault driver on BBC Radio 5 live
Hamilton is the better placed Mercedes to challenge those Ferraris. Meanwhile Bottas is getting attacked from Max Verstappen behind.
Lap 5/57
Sainz's McLaren is crawling along, with sparks flying behind him. He's desperately trying to get back to the pits, but that seems a long way away.
He had started seventh. At the moment he's still going, at 18th, but for how much longer?