Bernie Ecclestone described Lewis Hamilton as '100 per cent box office ' Formula One ringmaster believes Mercedes driver is 'great for the sport ' He also criticised Sebastian Vettel for not 'putting himself out there ' after winning four consecutive wold championships at Malaysian Grand Prix . Ecclestone , 84 , speaking ahead of Sunday 's Red Bull called for sprinkler system to be introduced at six races . He wants controversial double points ruling to return to the sport , too . CLICK HERE for all the latest F1 news .
Bernie Ecclestone described Lewis Hamilton as '100 per cent box office ' Formula One ringmaster believes Mercedes driver is 'great for the sport ' He also criticised Sebastian Vettel for not 'putting himself out there ' after winning four consecutive wold championships at Red Bull . Ecclestone , 84 , speaking ahead of Sunday 's Malaysian Grand Prix called for sprinkler system to be introduced at six races . He wants controversial double points ruling to return to the sport , too . CLICK HERE for all the latest F1 news .