Lewis Hamilton topped the timesheets on Friday’s final day of pre-season testing in Barcelona as he lead a Mercedes one-two from team-mate George Russell. The record seven-time world champion Hamilton posted a best 1 minute 19.138 seconds around the Circuit de Barcelona-Catalunya in the afternoon session, around 1 tenth of a second better than Russell managed when he was fastest in a morning disrupted by five red flags. Red Bull also delivered a strong finale in Spain as Sergio Perez and world champion Max Verstappen went third and fourth. The times set in testing are not considered wholly rel…