Who's best prepared of the big F1 2021 driver moves?
Sebastian Vettel, Daniel Ricciardo, Carlos Sainz and Sergio Perez have all changed Formula 1 teams for 2021 and two-time world champion Fernando Alonso's return to the grid completes an explosive set of big-name driver moves.
But after three days of testing in Bahrain, which of those drivers is ready to make an immediate impact?
We dive into their respective pre-season programmes to establish who has the most work to do, and who looks like they're ready to roll.
READ MORE HERE: the-race.com/formula-1/who-won-the-battle-to-be-f1s-most-prepared-big-signing/
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