Indeed, Bottas was in a league of his own at the Circuit de Catalunya, with Lewis Hamilton six tenths adrift in second on a lap that was slightly compromised.
With the Silver Arrows in a dominant position in both championships after recording four one-two finishes from as many races, Ferrari hoped upgrades would help them turn the tables in Barcelona, where they looked dominant in pre-season testing.
Having seen Mercedes seemingly stretch out their one-lap advantage, Vettel hopes for payback come race day.
"We tried a lot of stuff yesterday and again today, different directions and we ended up getting the best out of the car today which wasn't enough," he explained.
"We are certainly not satisfied but I am very happy with the approach, with the chance that we took in terms of trying something daring, something that ultimately it will pay off.
"Maybe not today at least, but hopefully it will help us in terms of pace for tomorrow. And hopefully it sets us off in the right direction for the next couple of weeks."
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