Kvyat pits for Red Bull after completing his 34th lap.
Raikkonen is back out there in the Ferrari. The car looks a lot more confident turn-in, suggesting its issue with the front-end from last year has been rectified.
Lewis has knocked his personal best down to a 1:23.615.
Lewis lapping consistently in the 1:24s after that personal best. Looks like he's on a medium run.
It would seem Hamilton is setting into a longer run as he is lapping around the low 1:24s as he looks to accumulate mileage.
Hamilton still lapping in the 1:24s on the medium tyres as Kvyat and Ericsson scamper out to join the reigning world champion on track.
@smantri20: It depends what you class as a long run. It's been doing handfuls of 10-lap bursts - compare that to Mercedes, which yesterday did 30 laps at one point I think. Hard to compare times as fuel loads etc are all unknown.
Kvyat improves slightly in the RB11 but only to 1:24.300, which leaves him seventh.
@VS: For the moment, yes.
@StevenPattinson: Of course, this session goes on until 5pm.
@mfbull: You should be wary of the fact we haven't seen any long runs from them yet.
Hamilton ticks over to 77 laps.
@RacingFan: On day four of testing.
If you think these times are representative of pace then you are very mistaken. As I keep telling you, especially @RacingFan, there are so many things more important than outright pace to McLaren at this test.
@Eddie: Early indications are he is more comfortable in this car than last year's.
Verstappen enters the fray. Hamilton has come in to the pits, ending his run of laps.
Button, Massa and Ericsson join the circuit.
@RacingFan: Because mileage is the important thing in Jerez.
@SpittingCobra: Good question. There's been some interesting responses from drivers when asked about tyres this week - the layout of the track and the type of asphalt are actually very unlike anything else on the calendar, so tyre runs here are not seen as that important as they will be in Barcelona.
Button pits again for McLaren. The team is focused on aero runs today so there's very little point dwelling on Button's lap times thus far.
@Spirit: Ah. I didn't realise Ferrari had told you what they do and do not feel like doing at the moment.
I'm not denying Ferrari looks better and have produced a better car, but I think they should be focusing on beating Renault in Melbourne, not Mercedes.