Championship leader Kimi Antonelli bounced back from a troubled sprint by storming to pole position for Sunday’s Miami Grand Prix . The 19-year-old continued Mercedes’ lockout of full qualifying poles so far this season – with Lando Norris’ sprint pole on Friday the only time their grip has been broken. It had appeared Mercedes’ dominance of the season was under threat as their rivals’ new packages slashed their advantage, with Norris converting that pole into a sprint victory, but the 19-year-old Antonelli underlined his title credentials by claiming a third successive pole. Max Verstappen burst into life amid a difficult start to the season to claim second, 0.166 seconds adrift, with Charles Leclerc third for Ferrari ahead of Norris in fourth. Antonelli has won the last two races to sit top of the standings ahead of team-mate and leading title rival Russell, and again had the edge on his experienced team-mate in the searing heat on the streets around Hard Rock Stadium.…