Championship leader Charles Leclerc topped the timesheets in first practice for the inaugural Miami Formula One Grand Prix on Friday. The Ferrari driver clocked 1 minute 31.098 seconds around the 5.412-kilometre Miami International Autodrome. He was followed by George Russell, only 0.071 seconds off the pace, as Mercedes enjoyed a relatively good session. World champion Max Verstappen of Red Bull was third, with team-mate Sergio Perez in fourth. In the other Ferrari car, Carlos Sainz was sixth, while seven-time world champion Lewis Hamilton was only eighth in his Mercedes. A ban on jewellery w…