George Russell believes James Vowles "thoroughly deserves" his opportunity as Williams team principal.
But the Mercedes driver has warned Vowles to expect "a few surprises" in his new role.
The former Silver Arrows strategic director was Grove-based Williams' choice to fill the void left by the departure of Jost Capito over the winter to take his first position at the helm of a team.
“Firstly, I’m really happy for James,” said Russell.
“I think he thoroughly deserves the opportunity, and he’s an incredibly hard worker.
“For us, personally, on a strategic level, when it came to race strategies, James had already sort of handed over his duties to others within the team.
“He was just overseeing, but actually, through all of last year, the decisions were being made by others, so in that regard, James has left us in very competent hands.”