Christian Horner now rates Daniel Ricciardo as Formula One's best overtaker but admits he once had his reservations about the Australian's ability to go wheel to wheel with rivals.
Ricciardo will move to Renault 2019 but in his five seasons with Red Bull has made decisive race-winning moves his trademark, scoring seven wins in that time. But his promotion to the team in 2014 was never straightforward, according to team boss Horner, as he had never been given the chance to showcase his talent during stints with HRT and Toro Rosso.
"He's been a pleasure to have in the team the last five years," Horner said.