
Revving up in Russia —
The Marussia team has decided to race just one car at the inaugural Russian Grand Prix after Jules Bianchi suffered serious brain injuries in a crash at Suzuka last weekend. The Frenchman's vehicle is shown here in Sochi.

Revving up in Russia —
Britain's Max Chilton is the Anglo-Russian outfit's sole entry for Sunday's race. Bianchi is the only Marussia driver to have won championship points in the team's four seasons on the grid.

Revving up in Russia —
Nico Rosberg's helmet has a sticker saying "All of us with Jules" in French to support Bianchi. His Mercedes also has a message backing F1 legend Michael Schumacher, who is in long-term recovery after a skiing accident 10 months ago.

Revving up in Russia —
Rosberg was fastest in Friday's opening practice session but the German's teammate and title rival Lewis Hamilton (pictured) was quickest in the second outing.

Revving up in Russia —
Hamilton, the 2008 world champion, leads the standings by 10 points from Rosberg with four races remaining this season.

Revving up in Russia —
Four-time world champion Sebastian Vettel speaks with F1 supremo Bernie Ecclestone during practice. The German is leaving Red Bull at the end of this season and is expected to join Ferrari.

Revving up in Russia —
That has left doubt over the future of Ferrari's Fernando Alonso -- seen here driving in practice at the Sochi Autodrom. The Spaniard has been linked with a return to McLaren, while Red Bull has already replaced Vettel with young Russian Daniil Kvyat from sister team Toro Rosso.

Revving up in Russia —
Alonso's current teammate Kimi Raikkonen (right) cycles around the new track at Sochi, which winds around the renovated resort town's Olympic park and is an unfamiliar circuit for the drivers.