British Open 2013: First round leaderboard topped by Kapur, Johnson

The first round of the 2013 British Open is underway at Muifield. Zach Johnson jumped to an early clubhouse lead while Tiger Woods is prowling for birdies on the back nine.

Phil Mickelson of the United States prepares to play off the 6th tee with his caddie Jim Mackay during the first round of the British Open Golf Championship at Muirfield, Scotland, Thursday July 18, 2013. (AP Photo/Scott Heppell)

Phil Mickelson of the United States prepares to play off the 6th tee with his caddie Jim Mackay during the first round of the British OpenGolf Championship at Muirfield, Scotland, Thursday July 18, 2013. (AP Photo/Scott Heppell)

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