Massa fastest in wet second practice
Few drivers set times
Alonso pits with problem
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Hulkenberg fastest in first practice
So Nico Hulkenberg nicked it at the last, pipping Nico Rosberg into P1 with a 1:44.355, 0.052s faster than the Mercedes.
That's the first time this season Hulkenberg has topped a practice session this season, although it was an unusual one after it was delayed by an early diesel spillage by a track sweeper.
Quote MessageWhat will the teams take away from that? Not a lot. It will be a pretty frantic second session.
David Coulthard
1) Hulkenberg 2) Rosberg 3) Vettel 4) Perez 5) Ricciardo 6) Sainz 7) Hamilton 8) Bottas 9) Verstappen 10) Raikkonen
11) Button 12) Massa 13) Nasr 14) Alonso 15) Maldonado 16) Kvyat 17) Palmer 18) Merhi 19) Ericsson 20) Stevens
Nico Hulkenberg finishes fastest in first practice for the Russian Grand Prix.
Nico Rosberg is into P1, is he going to end the session fastest? There's one final effort from Nico Hulkenberg to come...
Sebastian Vettel improves with a 1:44.986, with Nico Hulkenberg into P2 with 1:45.091s.
Meanwhile, Lewis Hamilton watches Felipe Massa spin in front of him, avoids the Williams, but spins himself soon after.
The chequered flag is out...
Lewis Hamilton loses a tenth or so in the final corner and he goes second fastest with 1:45.691. Just over two minutes of the session remaining...
Everyone appears to be on the soft tyres and the times are coming down, with Sebastian Vettel leaping into P1 with a 1:45.491. That is almost half a second faster than Nico Hulkenberg in P2, with Sergio Perez third fastest and Nico Rosberg in P4. Lewis Hamilton's best effort so far, a 1:47.800, is only good enough for seventh, but he is on a good lap now...
McLaren appear to be handling the conditions well as Fernando Alonso reclaims P1 with 1:47.443 after a brief spell on top from Valtteri Bottas.
Problems for Marcus Ericsson, though, with his Sauber being wheeled back from the exit of the pit lane.
"Every time I restart it, it stops," says Ericsson.
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Now Fernando Alonso goes fastest with 1:49.240 but it is an ever-changing timesheet as Valtteri Bottas moves into P2, ahead of Nico Hulkenberg.
Twelve times on the board as drivers finally get some proper running in as we head into the closing stages of first practice.
It is currently a McLaren one-two as Jenson Button leads from Fernando Alonso, who has just gone second fastest with a 1:51:036.
A brief flutter of the yellow flags as Sebastian Vettel and then Kimi Raikkonen run wide at Turn 8, the Ferraris struggling with the conditions there.
Jenson Button posts the fastest time on a three-car timesheet. a 1:50.920 on the soft tyre as his McLaren team-mate Fernando Alonso falls foul of the slippery conditions at Turn 8, running wide.
Meanwhile, Carlos Sainz and Kimi Raikkonen are also now on the soft tyres as we approach the final quarter-of-an-hour of this session.
Lee McKenzie
BBC F1 pit-lane reporter
Quote MessageAt the moment it is not heavy but we just need to keep our eyes open. Add some rain on top of some diesel on a wet track, that's not going to go well.
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A good effort here from Racco, bonus points for the use of colours, making it look like a scarf from an early incarnation of the Doctor from Doctor Who...
With just under 25 minute to go, Marcus Ericsson is only the second driver to put a time on the board with a 1:55.402.
Quote MessageWe don't want to destroy our inters, and there is no point running on slicks at the moment because the track is half wet. It is looking like that. I think they are predicting a lot of rain around 2:30pm. A two day grand prix will be fun anyway.
Daniel Ricciardo, who is not in his Red Bull at the moment.
Shades of Japanese Grand Prix practice at the moment with Friday, so far, proving uneventful because of the conditions - the track is still a little slippery after the diesel spillage from earlier. Not much for teams to learn, with qualifying and the race itself set to be dry.