Teams continue season preparation by trying out all the tyres in Barcelona apart from the full wet.
Franz Tost: "I’m pleased with how the whole team is working in the build-up to the start of the season."
Max Verstappen: "A good session and the first time I’ve done over a hundred laps in a single day."
Toro Rosso rookie sets the pace on super-soft tyres, and is well clear of the pack.
High-degradation Pirellis causing biggest headache for Formula One’s least-experienced driver.
Max Verstappen was the busiest driver today, completing the highest number of laps.
Max Verstappen now has a race distance under him in Winter testing, but what does his father, Jos, think?
Team boss sets high target for its new pair of rookie drivers.
Seventeen-year-old Formula One rookie sets himself a huge target for opening Grand Prix.
Wraps come off STR10 as Sainz and Verstappen gear up for their Formula One debuts.
The FIA's new super licence points system would even have locked Michael Schumacher out of F1.