Masters 2014: Bill Haas leads after first-round 68

American Bill Haas fires a 68 during his first round to lead the Masters in Augusta by one shot from defending champion Adam Scott, Bubba Watson and Louis Oosthuizen.

The 31-year-old was four-under for the round, including birdies at the 4th, 13th and 18th, on a difficult day for scoring under a hot Georgia sun.

Tournament favourite Rory McIlroy hit a one-under 71 and said the course was the toughest he has seen on a Thursday.

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