Zach Johnson leads The Open after day one

American Zach Johnson leads The Open after round one at Muirfield.

Johnson finished on five-under after a strong front nine, which included three birdies and and eagle.

He also birdied 12 before the only blemish on his round, a bogey at 14.

The likes of Mark O'Meara and Tom Lehman proved that age is no barrier with a four-under and three-under respectively, while the usual suspects of Phil Mickelson and Tiger Woods are a shot further back on two-under par.

India's Shiv Kapur did lead the tournament for a short while after six birdies in his opening seven holes. The back nine proved much tougher though as he double-bogeyed 10 and bogeyed 14 to finish two off the lead.

The highest-placed Britons are Oliver Fisher and Martin Laird on one-under, while Ian Poulter and Lee Westwood are both one-over par after round one.

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