Northern Ireland

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Rory McIlroy, of Northern Ireland, hits from the rough on the 14th hole during the second round of the Memorial golf tournament Friday, May 30, 2014, in Dublin, Ohio. (AP Photo/Darron Cummings)

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Rory McIlroy, of Northern Ireland, reacts to his shot from the 13th fairway during the first round of the Memorial golf tournament Thursday, May 29, 2014, in Dublin, Ohio. (AP Photo/Darron Cummings)

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Rory McIlroy, of Northern Ireland, hits out of a bunker on the 18th hole during the first round of the Memorial golf tournament Thursday, May 29, 2014, in Dublin, Ohio. (AP Photo/Jay LaPrete)

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Rory McIlroy, of Northern Ireland, hits from a bunker on the 14th hole during the first round of the Memorial golf tournament Thursday, May 29, 2014, in Dublin, Ohio. (AP Photo/Darron Cummings)

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Rory McIlroy, of Northern Ireland, reacts following a birdie on the 13th hole during the first round of the Memorial golf tournament Thursday, May 29, 2014, in Dublin, Ohio. (AP Photo/Darron Cummings)

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Rory McIlroy, of Northern Ireland, reacts to his shot from the 14th fairway during the first round of the Memorial golf tournament Thursday, May 29, 2014, in Dublin, Ohio. (AP Photo/Darron Cummings)

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Rory McIlroy, of Northern Ireland, hits from the 14th fairway during the first round of the Memorial golf tournament Thursday, May 29, 2014, in Dublin, Ohio. (AP Photo/Darron Cummings)

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Rory McIlroy, of Northern Ireland, hits from a bunker on the 14th hole during the first round of the Memorial golf tournament Thursday, May 29, 2014, in Dublin, Ohio. (AP Photo/Darron Cummings)

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Rory McIlroy, of Northern Ireland, tees off on the 15th hole during the first round of the Memorial golf tournament Thursday, May 29, 2014, in Dublin, Ohio. (AP Photo/Darron Cummings)