Mercedes behind Ferrari and McLaren so far in testing

Russell completed 66 laps in the afternoon session at the Circuit de Barcelona-Catalunya on Thursday after taking over from Lewis Hamilton in the lunch break, and ended the day sixth-fastest.

Charles Leclerc managed to set the pace for Ferrari ahead of Pierre Gasly and Daniel Ricciardo, having finished second yesterday behind McLaren’s Lando Norris.

Russell said after his session on Thursday that he was finding the test “really intriguing” as teams got up to speed with…