Daniel Ricciardo believes Lewis Hamilton had the edge over Sebastian Vettel in 2017 by maintaining a "cooler head" in difficult situations.
Hamilton beat Vettel to the championship by 46 points this year after the Ferrari driver's campaign collapsed with a series of poor results in Singapore, Malaysia and Japan. Although Ferrari's reliability issues turned the title in Hamilton's favour in Malaysia and Japan, Vettel dropped valuable points in a first lap incident in Singapore and when he was penalised for deliberately ramming Hamilton's Mercedes behind the Safety Car in Baku.
Speaking at a media event in Baku this week, Ricciardo said he rated Hamilton's personal performance above Vettel's this year.