Rory McIlroy, of Northern Ireland, catches a ball while hitting on the driving range during a practice round for the Masters Tournament Tuesday, April 9, 2013, at Augusta National Golf Club in Augusta, Ga. (AP Photo/Matt Slocum)
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Rory McIlroy and his caddie J.P. Fitzgerald check his lie on the no. 7 fairway during the second practice round of the 2013 Masters Tournament at Augusta National Golf Club on April 9, 2013, in Augusta, Ga. (JON-MICHAEL SULLIVAN / STAFF)
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Rory McIlroy hits from the fairway on No. 7 with his caddie J.P. Fitzgerald during the second practice round of the 2013 Masters Tournament at Augusta National Golf Club on April 9, 2013, in Augusta, Ga. (JON-MICHAEL SULLIVAN / STAFF)
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Rory McIlroy walks on the No. 7 fairway with his caddie J.P. Fitzgerald during the second practice round of the 2013 Masters Tournament at Augusta National Golf Club on April 9, 2013, in Augusta, Ga. (JON-MICHAEL SULLIVAN / STAFF)
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Rory McIlroy walks on No. 7 during the second practice round of the 2013 Masters Tournament at Augusta National Golf Club on April 9, 2013, in Augusta, Ga. (JON-MICHAEL SULLIVAN / STAFF)
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Rory McIlroy hits from the fairway on No. 7 with his caddie J.P. Fitzgerald during the second practice round of the 2013 Masters Tournament at Augusta National Golf Club on April 9, 2013, in Augusta, Ga. (JON-MICHAEL SULLIVAN / STAFF)
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Rory McIlroy walks on No. 7 during the second practice round of the 2013 Masters Tournament at Augusta National Golf Club on April 9, 2013, in Augusta, Ga. (JON-MICHAEL SULLIVAN / STAFF)
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Rory McIlroy chips onto the No. 7 green during the second practice round of the 2013 Masters Tournament at Augusta National Golf Club on April 9, 2013, in Augusta, Ga. (JON-MICHAEL SULLIVAN / STAFF)
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Rory McIlroy putts on No. 13 during the second practice round for the 2013 Masters Tournament at Augusta National Golf Club on Tuesday, April 9, 2013, in Augusta, Ga. (ANDREW DAVIS TUCKER/STAFF)
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Rory McIlroy hits an approach shot to No. 13 green during the second practice round for the 2013 Masters Tournament at Augusta National Golf Club on Tuesday, April 9, 2013, in Augusta, Ga. (ANDREW DAVIS TUCKER/STAFF)
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Rory McIlroy and his caddie J.P. Fitzgerald walk down the no. 6 fairway during the second practice round of the 2013 Masters Tournament at Augusta National Golf Club on April 9, 2013, in Augusta, Ga. (MICHAEL HOLAHAN/STAFF)
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Rory McIlroy hits from the sand on No. 13 during the second practice round for the 2013 Masters Tournament at Augusta National Golf Club on Tuesday, April 9, 2013, in Augusta, Ga. (ANDREW DAVIS TUCKER/STAFF)
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Rory McIlroy stands on No. 13 fairway during the second practice round for the 2013 Masters Tournament at Augusta National Golf Club on Tuesday, April 9, 2013, in Augusta, Ga. (ANDREW DAVIS TUCKER/STAFF)
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Rory McIlroy hits from the 13th fairway during the second practice round for the 2013 Masters Tournament at Augusta National Golf Club on Tuesday, April 9, 2013, in Augusta, Ga. (ANDREW DAVIS TUCKER/STAFF)
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Rory McIlroy and his caddie J.P. Fitzgerald walk down the 6 fairway during the second practice round of the 2013 Masters Tournament at Augusta National Golf Club on April 9, 2013, in Augusta, Ga. (MICHAEL HOLAHAN/STAFF)
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Rory McIlroy's ball sets on the No. 9 green during the second practice round of the 2013 Masters Tournament at Augusta National Golf Club on April 9, 2013, in Augusta, Ga. (JON-MICHAEL SULLIVAN/STAFF)
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Rory McIlroy tees off on No. 4 during the second practice round for the 2013 Masters Tournament at Augusta National Golf Club on Tuesday, April 9, 2013, in Augusta, Ga. (MICHAEL HOLAHAN/STAFF)
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Rory McIlroy tees off on No. 4 during the second practice round for the 2013 Masters Tournament at Augusta National Golf Club on Tuesday, April 9, 2013, in Augusta, Ga. (MICHAEL HOLAHAN/STAFF)
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Rory McIlroy talks with his caddie JP Fitzgerald after teeing off on No. 4 during the second practice round for the 2013 Masters Tournament at Augusta National Golf Club on Tuesday, April 9, 2013, in Augusta, Ga. (MICHAEL HOLAHAN/STAFF)
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Rory McIlroy tees off on No. 4 during the second practice round for the 2013 Masters Tournament at Augusta National Golf Club on Tuesday, April 9, 2013, in Augusta, Ga. (MICHAEL HOLAHAN/STAFF)
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Rory McIlroy tees off on No. 4 during the second practice round for the 2013 Masters Tournament at Augusta National Golf Club on Tuesday, April 9, 2013, in Augusta, Ga. (MICHAEL HOLAHAN/STAFF)
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Rory McIlroy, of Northern Ireland, wears a 2013 Masters competition pin in his hat during a practice round for the Masters Tournament Tuesday, April 9, 2013, at Augusta National Golf Club in Augusta, Ga. (AP Photo/Darron Cummings)
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One of Northern Ireland's Rory McIlroy's drivers is protected with a dog cover in his golf bag during a practice round for the Masters Tournament Tuesday, April 9, 2013, at Augusta National Golf Club in Augusta, Ga. (AP Photo/Darron Cummings)
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Rory McIlroy tees off on No. 4 during the second practice round for the 2013 Masters Tournament at Augusta National Golf Club on Tuesday, April 9, 2013, in Augusta, Ga. (MICHAEL HOLAHAN/STAFF)
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Rory McIlroy's golf bag sits next to the 18 green during the second practice round of the 2013 Masters Tournament at Augusta National Golf Club on April 9, 2013, in Augusta, Ga. (MICHAEL HOLAHAN/STAFF)
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Rory McIlroy hits from the fairway on No. 18 during the second practice round of the 2013 Masters Tournament at Augusta National Golf Club on April 9, 2013, in Augusta, Ga. (MICHAEL HOLAHAN/STAFF)