Rory McIlroy is growing into the role of golf's big beast. If the Americans want to target him, let them. McIlroy skipped on to the Ryder Cup stage here at Medinah unrecognisable from the uncertain, even shy youth who made his debut at Celtic Manor. There, he had still to be convinced of the power and authenticity of Ryder Cup mythology, wasn't sure what all the fuss was about.