Formula One - F1 - Test session - Sakhir, Bahrain International Circuit, Sakhir - 19/04/17 - Ferrari Formula One driver Sebastian Vettel of Germany drives during testing session at Bahrain. REUTERS/Hamad I Mohammed
SOCHI, Russia (Reuters) - Formula One champions Mercedes have led every lap of every Russian Grand Prix since the race made its debut around Sochi's Olympic Park in 2014 but Ferrari's Sebastian Vettel will aim to break that streak this weekend.
The four times world champion is enjoying his best start to a season since he was at Red Bull in 2011, leading Lewis Hamilton by seven points after two wins and a second place from the first three races.
