Johnson sets the pace as McIlroy struggles

Former Masters champion Zach Johnson began the 142nd Open Championship in the same imperious style as last year's event, but there was no let up in the misery for world number two Rory McIlroy.

While Johnson, a 2007 winner at Augusta, carded a five-under 66 to set the clubhouse lead, McIlroy is already facing a battle to make the cut after a disastrous 79 left him 13 shots off the lead.