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Rory McIlroy, of Northern Ireland, watches his shot from the rough on the 17th hole at the St. Jude Classic golf tournament on Friday, June 8, 2012, in Memphis, Tenn. McIlroy finished the second round at 7-under-par 133. (AP Photo/Mark Humphrey)

Rory McIlroy, of Northern Ireland, watches his shot from the rough on the 17th hole at the St. Jude Classic golf tournament on Friday, June 8, 2012, in Memphis, Tenn. McIlroy finished the second round at 7-under-par 133. (AP Photo/Mark Humphrey)

Johnson wins St. Jude Classic

Dustin Johnson won the St. Jude Classic on Sunday June 10, in his second event after a back injury cost him nearly three months away from the PGA Tour, shooting a 4-under 66 that held off John Merrick by a stroke.