Rory McIlroy, of Northern Ireland, checks his course guide on the first green during a practice round for the Masters Tournament Monday, April 8, 2013, at Augusta National Golf Club in Augusta, Ga. (AP Photo/David Goldman)
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Rory McIlroy, right, of Northern Ireland, and Lee Westwood, of England on the third tee during a practice round for the Masters Tournament Monday, April 8, 2013, at Augusta National Golf Club in Augusta, Ga. (AP Photo/David Goldman)
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Spectators watch as Rory McIlroy, of Northern Ireland, tees off from the third hole during a practice round for the Masters Tournament Monday, April 8, 2013, at Augusta National Golf Club in Augusta, Ga. (AP Photo/David Goldman)
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Rory McIlroy, of Northern Ireland, checks his chip shot to the second green during a practice round for the Masters Tournament Monday, April 8, 2013, at Augusta National Golf Club in Augusta, Ga. (AP Photo/David Goldman)
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Rory McIlroy, of Northern Ireland, chips out of a bunker on the second hole during a practice round for the Masters Tournament Monday, April 8, 2013, at Augusta National Golf Club in Augusta, Ga. (AP Photo/David Goldman)
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Rory McIlroy, of Northern Ireland, watches his shot on the first fairway during a practice round for the Masters Tournament Monday, April 8, 2013, at Augusta National Golf Club in Augusta, Ga. (AP Photo/David Goldman)
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Rory McIlroy, of Northern Ireland, walks up the fourth fairway during a practice round for the Masters Tournament Monday, April 8, 2013, at Augusta National Golf Club in Augusta, Ga. (AP Photo/David Goldman)
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Rory McIlroy putts on No. 9 during the first practice round of the 2013 Masters Tournament at Augusta National Golf Club on April 8, 2013, in Augusta, Ga. (Jon-Michael Sullivan/Staff)
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Rory McIlroy talks things over with his caddie Terry Mundy on the 9 green during the first practice round of the 2013 Masters Tournament at Augusta National Golf Club on April 8, 2013, in Augusta, Ga. (Jon-Michael Sullivan/Staff)
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Rory McIlroy reacts to a putt on No. 9 during the first practice round of the 2013 Masters Tournament at Augusta National Golf Club on April 8, 2013, in Augusta, Ga. (Jon-Michael Sullivan/Staff)
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Rory McIlroy reacts to a putt on No. 9 during the first practice round of the 2013 Masters Tournament at Augusta National Golf Club on April 8, 2013, in Augusta, Ga. (Jon-Michael Sullivan/Staff)
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Rory McIlroy walks off the No. 9 green during the first practice round of the 2013 Masters Tournament at Augusta National Golf Club on April 8, 2013, in Augusta, Ga. Jon-Michael Sullivan Staff)
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Rory McIlroy walks off the No. 9 green during the first practice round of the 2013 Masters Tournament at Augusta National Golf Club on April 8, 2013, in Augusta, Ga. (Jon-Michael Sullivan/Staff)