So that ends free practice two. The Red Bulls fastest with Rosberg next. Interesting weekend in store
Free Practice 2
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Winding down the action now - nothing out there will threaten the timesheets.
Very sad breaking news: According to Cadena Ser Radio, former F1 driver María de Villota has been found dead in her hotel room in Sevilla. Stay logged onto Eurosport.com for more when we have it.
Fernando Alonso struggling on his used tyres to such an extent that Vettel has overtaken him.
Webber has a moment at Turn 2, but nothing more. The Red Bull driver runs onto the grass briefly, but there's no damage and he continues.
Massa comes in now for get some hard rubber bolted onto his Ferrari.
More and more drivers now on the harder tyres for the final stage of this practice session.
Hulkenberg confirms to his team that his rear tyres are shot.
Webber and Di Resta have a set-to as the Red Bull man tries to get past the Scot as they were both on a race preparation run.
Vettel come into the garages and he switches to hard tyres, his mediums having done 18 laps.
Alonso slides once more at Degner. He continues but it's not convincing driving from the Ferrari man.
Perez is spotted holding an icepack to his right wrist following that big off earlier on. Worrying for McLaren.
Rosberg heads into the garages after being told to pit.
Rosberg on team radio: “The vibration is getting a lot worse now”.
Alonso, with his medium tyres having been ruined by that spin earlier, is out on hard tyres.
On these long runs, the Red Bulls are clocking times around 5.5 seconds slower than their quick lap. Vettel now posts a 1m39.705s while Webber does a 1m39.581s.
Raikkonen on team radio: “I got stuck in gravel. Car is OK.”
Raikkonen looks good on his first lap on medium tyres but then the back end of the Finn's Lotus wobbles and he's in the gravel at Dunlop.
McLaren: "Just seen @SChecoPerez after his shunt - he's come back to the pit garage. He says he's okay."
As it stands: Vettel, Webber, Rosberg, Raikkonen, Grosjean, Hamilton, Ricciardo, Massa, Button and Alonso.
Mercedes: "Time for @LewisHamilton to hit the track for long runnery on pre-loved medium tyres."
A bit of a lull in proceedings now after the option tyre runs.
Charles Pic on team radio: “I’m not able to make the front to work, a huge difference from lap to lap. I don’t understand why.”
Raikkonen eases in fourth spot with some medium rubbers bolted onto his Lotus.
Ricciardo moves sixth and to within 0.621s of Vettel's benchmark time.
Hamilton completes his lap but the first session's pace setter can only manage fourth fastest this time.
It's Vettel's turn on top of the pile now as the German lays down a 1m33.852s to knock his Red Bull team-mate Webber of his perch.
Rosberg goes second to Webber with a 1m34.114s.
Amid the chaos Webber goes top with a time of 1m34.020s on medium tyres.
Another spin, this time it's Alonso as his Ferrari takes a lot of the kerb and he slides down the hill at the first Degner. No further damage though as he manages to avoid anything hard!
Rosberg and Webber head out, and they're soon followed by Hamilton and Vettel.
Di Resta team radio: “The Hulk has backed out of his lap, he’s gone wide exit Spoon.”
Button, who had stayed out on the track throughout the aftermath of Perez's crash, jumps up to fifth with a time of 1m35.065s.
Perez's McLaren has now been hauled away and the track is clear once more - but for how long?
That's three cars now are not in the game in this second practice session - Perez, Maldonado and Bianchi.
Oh dear, another crash as Perez slides off at Spoon. He confirms on the radio that he's okay although his car's got a dent in it.
Webber, Hamilton, Button and Alonso are all out there.
The track is clear at Degner now and we should see the cars re-emerge soon enough.
Maldonado's car is being lifted off the track by a tractor as the driver himself looks on.
Williams on team radio: “Pastor, everything OK with the car? Oh.”
Maldonado's problem came at Degner again as he ran wide. It's not his weekend so far.
Maldonado's in the barriers again as Vettel goes back to the top with a 1m34.487s.
Ricciardo briefly betters Vettel's time before Rosberg hits back for Mercedes with a lap of 1m34.690s.
Indeed, Vettel completes his lap and tops the list with a time of 1m34.746s.
The two Mercedes head out, as Vettel looks quick in the opening sector.
Maldonado, then Hulkenburg and then Ricciardo take turns at the top of the fledgling timesheets, the Aussie posting the quickest time of 1m35.920s.
And that quartet is soon joined by Ricciardo, Vergne and di Resta.
Chilton, Raikkonen and Hulkenberg are also out there early one.
Stewards are investing the incident that saw Maldonado's tyre come free during the first session and
Maldonado is the first man out this session, easing his Williams out of the garage.
Heikki Kovalainen's stint in the Caterham hotseat has ended, with Charles Pic returning having handed over the reins for the first session.
Here we go then! We are green and we've got an hour and half of action to look forward to before the close of play today.
Marussia's French rookie Jules Bianchi will not partake in this second session after crashing his car heavily in the morning.
No rain on the radar for this session or, indeed, the rest of the weekend.
Air temperature is currently 29 degrees at Suzuka - it's not going to get any hotter than that today.
Another 90 minutes of practice awaits the drivers and their cars.
Lewis Hamilton led a Mercedes one-two in the opening session earlier today, with the Red Bulls settling for third and fourth.
Hello and welcome to our live coverage of the second of today's practice sessions in Suzuka.