With Max Verstappen giving up his scheduled afternoon slot in the Red Bull to Sergio Perez for the second day of pre-season testing, it was Carlos Sainzs Ferrari SF-24 which headed the times. Even if we allow 0.6s for the difference between Sainzs C4 tyres and the C3s on which Perez was second-fastest, it still has the Ferrari around 0.1s faster on single lap pace.