Christian Horner feels Daniel Ricciardo proved his "thoroughly deserved the drive" with Red Bull Racing with his Canadian GP victory.
The Australian racer, who joined Red Bull from junior team Toro Rosso, has been the pick of the Red Bull drivers with two podium finishes leading up to the Canadian GP.
That two became three on Sunday afternoon in Montreal when he launched a late attack on the front runners to take the victory from Nico Rosberg.
It was the first time that Mercedes had been beaten this season and was in fact also the first time a car other than a Merc lead a race on merit.
"Amazing," said Red Bull team boss Horner. "Daniel has been unbelievable all season.
"Of all races we thought we could win, this would have been the most unlikely.
"The way he drove, he thoroughly deserved the drive. He's proved his worth. He's exceeded all of his expectations."
Meanwhile, chief designer Adrian Newey revealed that the 24-year-old kept his cool throughout the race even when he was struggling to pass Sergio Perez and especially when the victory was in his sights.
"Daniel is an amazing young man," Newey told the BBC. "What impresses me most is how calming he is when he comes on the team radio.
"We were a bit lucky in truth but we were there and ready."
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