Ricciardo posts a new personal best, a 1:24.365, but that's not enough to move him higher than fourth.
@AlexVlad: I find it amazing that people are writing off Honda's entire season on the back of one day of testing. There's a long time until Melbourne.
Ricciardo going faster and faster and he's knocked Rosberg down to third with his latest run. He goes purple in sectors one and two before crossing in 1:23.338.
Pardon me, Ricciardo moved to third with that last run.
Bottas and Rosberg now head out again.
I would say the most important thing to look at from this test is Mercedes' mileage, rather than any headline time alongside a drivers name. Incredibly impressive feat from Mercedes and an ominous sign. Teams aren't looking for pace at this point.
Looks like Rosberg is focusing on ANOTHER long run as his lap count ticks past 114.
@Matt: There's quite a lot to get through before we last saw a McLaren! Alonso came out at about 10.45 this morning, the engine spluttering. He did one lap and completed a handful more as the morning continued but we haven't seen Alonso back out there since. McLaren expected a slow start with a new power unit so it's too early to read too much in to it, but it's obviously far from ideal.
That Tweet suggests Mr Alonso is ready to add to his six laps this afternoon.
Vettel, Rosberg, Bottas and Ericsson are your men out on track.
@Prithvi: Well, it goes without saying he's quick! Last year he became the first Red Bull driver to win Formula Renault 3.5 and he just looked ferociously fast at times during that championship
. I actually think he'll benefit from how much interest there is going to be in 17-year-old Verstappen alongside him.
@ankur: He does have the headline time but we don't know about fuel runs and engine modes etc. Mileage probably more important than pace at this point.
@ankur: Well, I think he suffers from his own success as Schumacher did when he was at his prime - often people said it was the car and not Schumacher winning it in the Ferrari days. Clearly Vettel is one of the elite drivers and I am excited to see him driving at Ferrari, a car which won't be the best out there where he can showcase his talents in the way Alonso had to while he was at Maranello.
@Bart: Hello Bart. Yes, it's very impressive, perhaps the main talking point from everything that's happened on track so far. Times are not a great indicator of anything at this time, I think Mercedes has almost completely focused on longer runs today.
@MichaelDuncan: I think Rosberg's headline time was set on a shorter run, before he came back out on one of the long runs.
122 laps for Rosberg now.
@Adrian: No indication anything is going to happen yet.
Worth noting that, behind Rosberg, Sainz and Ericsson have racked up more laps than anyone else. Toro Rosso and Sauber will be encouraged by what they have done today, especially with Lotus yet to arrive and Force India not even in Spain.