Ferrari's new SF70H and Sebastian Vettel outpaced Mercedes and Valtteri Bottas as teams broke for lunch time on day 1 of pre-season testing in Barcelona.
The two men traded places at the top of the time sheets all morning with Bottas raking in 79 laps, while Vettel clocked in at 62 laps.
It's worth noting however that the Mercedes driver accomplished two long runs on soft tyres at one point, while Vettel stuck to the medium compound, edging out the Finn with a 1:22.791, the only sub-22 lap of the day so far.
Sergio Perez has been a consistent runner so far, but running a shorter distance compared to the men up front, with 39 laps put on the new Force India, the fastest of which was done on a set of soft tyres.
Red Bull's new RB13 was sidelined after just four laps with a sensor problem, while McLaren was hit by a more serious oil system issue which prevented Fernando Alonso from acheiving anything more than an installation lap. The MCL32 was expected however to be back out on track this afternoon.
Haas' Kevin Magnussen was the first driver to hit the barriers in 2017 following a mishap which damaged the VF-17's front wing.
Track action will resume at 14:00 local time
GALLERY: F1 drivers' wives and girlfriends
Keep up to date with all the F1 news via Facebook and Twitter
