©Ferrari
Charles Leclerc and Sebastian Vettel put Ferrari at the top the timesheet on the opening day of running in Baku but both drivers are expecting a fierce battle with Mercedes in qualifying.
Leclerc edged his Scuderia team mate in FP2, with reigning world champion Lewis Hamilton concluding the day's single session seven tenths down on the Monegasque.
The 21-year-old looked fired up on Friday and determined to lead the way in Azerbaijan, but Leclerc expected Mercedes' chargers to unleash the full might of their W10 on Saturday afternoon.
Raikkonen on manhole drama: 'We looked like amateurs!'
"I’m quite confident with the car, quite confident with the track, so overall it’s a good day," Leclerc said.
"But looking at their pace in the race run, I expect quite a lot more from them tomorrow in qualifying. I’m absolutely sure there is more to come from Mercedes.
"They were very quick on the long runs, so there is no reason they are slow on the short runs.
"I am sure tomorrow when they put everything together, it’s going to be very tight."
©Ferrari
Vettel agreed that beating the Silver Arrows squad remained Ferrari's biggest challenge.
"Mercedes will be the ones to beat. Red Bull also looked fast at times so I think it will be close tomorrow," said the German.
"Here, to be honest, it’s mostly about having the confidence in the car with so many big stops after high-speed braking and very little reference. It’s easy to do mistakes over the bumps and go straight.
"Overall I think it will be decisive tomorrow to have a good feel with the car and that’s what we are working towards."
Gallery: The beautiful wives and girlfriends of F1 drivers
Keep up to date with all the F1 news via Facebook and Twitter
The Formula 1 paddock was rocked early last season when Liam Lawson was unceremoniously demoted…
Two-time F1 world champion Mika Häkkinen has delivered a glowing tribute to Oscar Piastri –…
Isack Hadjar is preparing for his first full season with Red Bull Racing, and that…
François Cevert - seen here trying for size his future Tyrrell 005 at the British…
Seven-time world champion Lewis Hamilton isn’t just revving up for a new Formula 1 season…
Former F1 ringmaster Bernie Ecclestone and Alpine’s executive advisor Flavio Briatore may have mellowed with…