Kevin Magnussen and Romain Grosjean slot into second and third 0.5 sec behind Vettel, and ahead of Hamilton and Bottas.

1. Hamilton
2. Bottas
3. Vettel
4. Leclerc
5. Ricciardo

They're all on the soft tyres.

If you've been under a rock for the last few days, then you'll need to know that Charlie Whiting, the head of Formula 1 for motorsport's governing body the FIA and one of the most influential people in the sport, has died aged 66.

Whiting suffered a pulmonary embolism , externalon Thursday morning in Melbourne, where he was due to officiate this weekend's season-opening Australian GP.

Whiting was the official race starter and oversaw all rules matters in F1.

FIA president Jean Todt called Whiting "a central and inimitable figure who embodied the ethics and spirit" of F1.

Whiting had worked for the FIA since 1988, when he joined initially as technical director.

Read the story.

Image source, Getty Images

Andrew Benson
BBC Sport’s chief F1 writer in Melbourne

While Ferrari had a difficult Friday, Mercedes had a good one. But just because they look quick here in Melbourne, that does not mean they were deliberately disguising their pace in pre-season testing.

Their internal analysis showed them to be behind Ferrari in Barcelona. There is margin for error in the numbers of as much of 0.6secs or so, but the median of the range was a deficit of about 0.5secs on pace.

What does that all mean for this weekend? It’s hard to say, other than any scenario would not be a huge surprise - Ferrari ahead, level pegging, or Mercedes in front.

He's hit the wall in the pitlane coming round the corner with part of his rear wing leaving some debris, which Kimi Raikkonen narrowly avoided a few seconds later.

Image source, Formula 1 Twitter

Bottas goes to the top of the leaderboard, with Hamilton only 0.015 behind, but now the five-time world champion is back at the top.

It seems like we might see a lot of this this season...

Hamilton posts the quickest first sector, and goes top of the table. But Sebastian Vettel follows 0.040 sec behind.

Image source, Getty Images

We have six new drivers this year, plus a load of driver changes, you may not be used to seeing the cars with different race numbers... and our current leaderboard too:

1. Hamilton (44)
2. Vettel (5)
3. Bottas (77)
4. Leclerc (16)
5. Kvyat (26)
6. Grosjean (8)
7. Magnussen (20)
8. Verstappen (33)
9. Hulkenberg (27)
10. Albon (23)
11. Ricciardo (3)
12. Sainz (55)
13. Stroll (18)
14. Raikkonen (7)
15. Giovinazzi (99)
16. Norris (4)
17. Perez (11)
18. Gasly (10)
19. Kubica (88)
20. Russell (63)

Jennie Gow
BBC Radio 5 live pit-lane reporter

I've just been speaking to Pirelli about what they think the time differences are between the tyres. They say:

Hard to medium 0.5 sec, medium to soft is around one second difference, but they think that will come down as it gets hotter.

They reckon strategy-wise it's a one- stop, two-stop is marginally faster but we know what happened last year when that's the case...

So we're expecting a one-stop, potentially a two-stop if you want to pick up that extra point for fastest lap.

Has anyone watched the Netflix Original series on F1 - Formula 1 Drive to Survive?

If you get to episode nine, you'll find out about the battle between Haas and Renault last year. 2018 was Haas' most successful year, but it could've been so much better with that fourth spot in the constructors' championship, particularly for a team who are only going into their fourth year in existence in F1.

Andrew Benson
BBC Sport’s chief F1 writer in Melbourne

Image source, Getty Images

Alexander Albon had a difficult start to his Formula 1 career on Friday, with a light crash and two off-track moments.

He blamed the crash at Turn Two on “a little bit of inexperience - and the tyres were a little bit too hot”. An off-track moment in second practice was caused by his steering wheel getting stuck on the head rest.

Considering it was my first time here, I was quite happy with how it went. But that did mean going into FP2 a bit more steady and just building up the rhythm.” Toro Rosso actually looked good - and look like they could be contending at the front of the midfield group, which comprises likely leaders Haas, Renault and Alfa Romeo.

The form of Racing Point and McLaren suggests they may be towards the back of that group, but it’s so close it’s hard to tell at this stage. The only clear thing for now is that Williams are nowhere.

George Russell: "Sliding all over the place."

Since it's qualifying day, who's your fantasy top four?

Who would you like to see lining up on the first two rows of the grid tomorrow morning?

It's #bbcf1 on Twitter for your thoughts.

Our session will be getting underway in a few minutes time.

Image source, Alfa Romeo Twitter

"It's going to be odd. One day you're watching them on TV thinking 'I want to be there'. It's quite odd how quickly it can happen."

BBC Radio 5 Live Sports Extra

Our commentary team of Jack Nicholls, Jennie Gow and Jolyon Palmer will be back on BBC Radio 5 live sports extra in five minutes and you can listen at the top of the page.