Lewis Hamilton and George Russell have had their first taste of track action this year after completing a Pirelli tyre test.
The Mercedes duo took part in the test at Paul Ricard as the Italian manufacturer continues work on its F1 offering.
Seven-time champion Hamilton will be looking to bounce back this season after enduring his first winless season in the sport last year and finishing behind Russell, who secured a first pole position and race victory in his inaugural campaign with the Silver Arrows.
The W13 will be back in action on February 7-8 with a further two days of running scheduled at Jerez, before the serious business for the new year begins.