How Horner holds the key to the driver market

It might not seem at first glance that Christian Horner is controlling Formula 1's driver market, but as Dieter Rencken explains, the Red Bull team principal holds all the aces in his hands

How Horner holds the key to the driver market

One of the most fascinating aspects of the 'Who will fill Mark Webber's cockpit?' conundrum has been the back story; the jostling for position by teams and their principals, managers and headline sponsors.

It all kicked off, of course, with the Australian's late-June announcement that he would be switching to Porsche and endurance racing from 2014.