George Russell left it late to top the timesheets of the opening practice session at this weekend’s Miami Grand Prix, with the Mercedes driver leading the way ahead of team mate Lewis Hamilton and Charles Leclerc. Under the sweltering Miami heat that saw track temperatures reach as high as 51C, the drivers filed out on to the Miami International Autodrome as they looked to get to grips with the resurfaced circuit. READ MORE: Verstappen not surprised by internal battle at Red Bull as Perez vows to keep team mate ‘under pressure’ And, as he so often does, Max Verstappen –…