Red Bull team principal Christian Horner has rubbished claims made by Max Verstappen’s dad that the team “exerted little influence” in helping his son as the world championship leader, and insists there will be no favouritism over Sergio Perez. Perez has competed closer with Verstappen this season after winning his first race of the campaign in Monaco on May 29, and Jos Verstappen took to Max’s official website to vent his frustration against Red Bull’s tactics. Ad/> He said: “Red Bull achieved a good result, but at the same time exerted little influence to help Max to the front.