Fred Couples stretches before teeing off on 2 during the first round of the 2013 Masters Tournament at Augusta National Golf Club on April 11, 2013, in Augusta, Ga. (JON-MICHAEL SULLIVAN/STAFF)
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Fred Couples reacts to a putt on No. 8 during the first round of the 2013 Masters Tournament at Augusta National Golf Club on Thursday, April 11, 2013, in Augusta, Ga. (EMILY ROSE BENNETT/STAFF)
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Fred Couples acknowledges the gallery after putting on the 14th green during the first round of the 2013 Masters Tournament at Augusta National Golf Club on Thursday, April 11, 2013, in Augusta, Ga. (ANDREW DAVIS TUCKER/STAFF)
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Fred Couples acknowledges the gallery after putting on the 14th green during the first round of the 2013 Masters Tournament at Augusta National Golf Club on Thursday, April 11, 2013, in Augusta, Ga. (ANDREW DAVIS TUCKER/STAFF)
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Fred Couples tees off on No. 2 during the first round of the 2013 Masters Tournament at Augusta National Golf Club on April 11, 2013, in Augusta, Ga. (JON-MICHAEL SULLIVAN/STAFF)
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Fred Couples walks on the 15th green during the first round of the 2013 Masters Tournament at Augusta National Golf Club on Thursday, April 11, 2013, in Augusta, Ga. (EMILY ROSE BENNETT/STAFF)
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Fred Couples acknowledges the gallery after putting on the 15th green during the first round of the 2013 Masters Tournament at Augusta National Golf Club on Thursday, April 11, 2013, in Augusta, Ga. (EMILY ROSE BENNETT/STAFF)
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Fred Couples lines up a putt on No. 15 during the first round of the 2013 Masters Tournament at Augusta National Golf Club on Thursday, April 11, 2013, in Augusta, Ga. (EMILY ROSE BENNETT/STAFF)
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Fred Couples hits an approach shot to the 15th green during the first round of the 2013 Masters Tournament at Augusta National Golf Club on Thursday, April 11, 2013, in Augusta, Ga. (EMILY ROSE BENNETT/STAFF)
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Fred Couples hits out of a bunker on the 18th green during the first round of the Masters Tournament at Augusta National Golf Club on Thursday, April 11, 2013, in Augusta, Ga. (AP Photo/Darron Cummings)
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Fred Couples pumps his fist after putting on the 17th green during the first round of the Masters Tournament at Augusta National Golf Club on Thursday, April 11, 2013, in Augusta, Ga. (AP Photo/Matt Slocum)
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Fred Couples, left, and Dustin Johnson shake hands after finishing on the 18th green during the first round of the 2013 Masters Tournament at Augusta National Golf Club on Thursday, April 11, 2013, in Augusta, Ga. (JEFF JANOWSKI/STAFF)