Lewis Hamilton and Sebastian Vettel
Ferrari Sebastian Vettel made the fastest time on Pirelli tires first day at Yas Marina Circuit in Abu Dhabi.
The tests began two days after the end of the 2018 season of Formula 1 World Cup.
Lewis Hamilton was crowned world champion for the fifth time in a row and his team continued to dominate the manufacturers category.
Felipe Potas in Finland took the fastest time during the morning samples in one minute and 37.231 seconds before Vettel won the evening test in one minute and 36.812 seconds.
In the evening Botas ended, and Force Stall's Force Stallock driver Dennis Stroll finished third and Red Bull Max Verstapen finished fourth.