Vettel no racing cert, warns Red Bull chief

Red Bull team principal Christian Horner is aware of just how easily this year’s Formula One world title could slip through the fingers of Sebastian Vettel.

The 26-year-old German opened up a 46-point cushion over his rivals on Sunday with victory in the Belgian Grand Prix, his largest margin of the year to date, with Fernando Alonso now his closest challenger.

It seems inconceivable Vettel will blow his lead from such a position of strength, with his odds on making it four successive championships now slashed to 1-7 by William Hill.