HIGHLIGHTS: Watch all the action from the final day of pre-season testing in Bahrain
Max Verstappen ensured Red Bull capped off what appeared to be a very promising pre-season test for Red Bull by notching up the fastest time of the weekend on the final day in Bahrain.
The new RB16B has looked quick through all three days, and Verstappen put it to good use on Sunday evening to secure top spot on the time sheets, with Japanese rookie Yuki Tsunoda a surprise second quickest for AlphaTauri.
Elsewhere Mercedes' apparent struggles continued, with Lewis Hamilton losing more time in the afternoon session when the team kept his W12 in the garage, before he did get out on track but seemed oddly ill at ease in the car, failing to match Red Bull's pace and suffering a spin into the bargain.
There was also a somewhat bizarre finish to the day when Ferrari new boy Carlos Sainz and Alfa Romeo's Kimi Raikkonen had an on-track squabble in the dying moments on the session.
Hit play in the video above to see all the key action from the final day of pre-season testing.