SOCHI, Russia (Reuters) - Sergey Sirotkin raised eyebrows when he first appeared on the Formula One radar in 2013 as a little-known teen with seemingly wealthy backers but the Russian racer looks more like the real deal now.
The 20-year-old, announced this week as a Renault test driver, was handed Kevin Magnussen's car for first practice at his home grand prix on Friday and made the most of the opportunity.
