'We're optimistic' - R&A on Open at PortmarnockTo play this video you need to enable JavaScript in your browser.This video can not be played'We're optimistic' - R&A on Open at PortmarnockClose30R&A Chief Executive, Mark Darbon on the hosting the Open Championship at Portmarnock.SubsectionGolfPublished15 JulyShareclose panelShare pageCopy linkAbout sharingRead description