Phil Mickelson

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Phil Mickelson watches his tee shot on the 14th hole during the second round of the Wells Fargo Championship golf tournament in Charlotte, N.C., Friday, May 2, 2014. (AP Photo/Chuck Burton)

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Phil Mickelson prepares to his his tee shot on the 13th hole during the second round of the Wells Fargo Championship golf tournament in Charlotte, N.C., Friday, May 2, 2014. (AP Photo/Chuck Burton)

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Phil Mickelson watches his tee shot on the fourth hole during the first round of the Wells Fargo Championship golf tournament in Charlotte, N.C., Thursday, May 1, 2014. (AP Photo/Chuck Burton)

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Phil Mickelson chips to the 16th green during the first round of the Wells Fargo Championship golf tournament in Charlotte, N.C., Thursday, May 1, 2014. (AP Photo/Bob Leverone)

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Phil Mickelson hits from a sand trap on the fourth hole during the first round of the Wells Fargo Championship golf tournament in Charlotte, N.C., Thursday, May 1, 2014. (AP Photo/Chuck Burton)

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Phil Mickelson watches his approach shot on the fourth hole during the first round of the Wells Fargo Championship golf tournament in Charlotte, N.C., Thursday, May 1, 2014. (AP Photo/Chuck Burton)

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Phil Mickelson watches his tee shot travel to the sixth green during the pro-am of the Wells Fargo Championship golf tournament at Quail Hollow Club in Charlotte, N.C., Wednesday, April 30, 2014. (AP Photo/Bob Leverone)

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Phil Mickelson tees off on the second hole during the second round of the Masters golf tournament Friday, April 11, 2014, in Augusta, Ga. (AP Photo/David J. Phillip)