Daniel Ricciardo finishes top of the timesheet by three tenths of a second.
Valtteri Bottas is second ahead of the two Ferraris, but Lewis Hamilton is fifth and 1.2 seconds down on the Red Bull.
But it is a very mixed opening session for Red Bull, with Max Verstappen limited to just two laps and unable to set a time after his early breakdown.
A surprise to see Ricciardo top this session?
Probably, but it’s very early days in the weekend – particularly as mid-afternoon isn’t when qualifying and the race will be run.
But it does look close between the ‘Big Three’ on first evidence, which is good news