"When we did not choose the best tyre strategy and this afternoon, Daniel struggled to find any grip in the early stages and was then forced to retire with a reliability problem," said the team principal.
"It felt like I was driving on ice,' Ricciardo said of those tricky first laps. "It took a very long time to warm up the tyres. Afterwards, after about ten laps, I got up to speed and my lap times were not too bad, but by then I had lost too much time in the early stages. I think we have more homework to do when it comes to the tyres," he added.
"Not the ending I wanted for the first Grand Prix of the season, especially here in my home race," sighed Ricciardo, who was already looking forward to next week's race in Malaysia for better fortunes.