Formula One World Championship: Carlos Sainz jr (ESP) Scuderia Toro Rosso walks the track with Marco Matassa (ITA) Scuderia Toro Rosso Engineer at Formula One World Championship, Rd4, Russian Grand Prix, Preparations, Sochi Autodrom, Sochi, Krasnodar Krai, Russia, Thursday 28 April 2016.
Carlos Sainz jr (ESP) Scuderia Toro Rosso walks the track with Marco Matassa (ITA) Scuderia Toro Rosso Engineer at Formula One World Championship, Rd4, Russian Grand Prix, Preparations, Sochi Autodrom, Sochi, Krasnodar Krai, Russia, Thursday 28 April 2016.