Daniel Ricciardo post-qualifying at the 2018 United States Grand Prix.

But the Australian expects he could keep Vettel behind him in the race nonetheless.

Daniel RIcciardo in his garage at the 2018 Japanese Grand Prix.

Daniel Ricciardo will start from 15th thanks to another Renault engine failure.

Daniel Ricciardo in his garage at the 2018 Singapore Grand Prix.

Daniel Ricciardo is at a loss to explain how he fell so far off the pace in qualifying for the Singapore Grand Prix.

Daniel Ricciardo at the 2018 Singapore Grand Prix

Daniel Ricciardo reckons he’ll be in the mix this weekend.

Daniel Ricciardo in his garage at the 2018 Hungarian Grand Prix.

Daniel Ricciardo will leave Red Bull Racing at the end of the season.

Daniel Ricciardo and soon-to-be teammate Nico Hulkenberg

Daniel Ricciardo’s unexpected Renault switch has thrown the driver market into disarray.

Daniel Ricciardo.

Daniel Ricciardo’s Renault switch seems risky, but it’s based on some sound reasoning.

Daniel Ricciardo with 2019 Renault teammate Nico Hulkenberg.

Daniel Ricciardo has dropped the driver market bombshell of the season.

Faster cars aren’t the answer to F1’s problems.

Daniel Ricciardo in his garage at the 2018 British Grand Prix.

Daniel Ricciardo is out of options for 2019.