Dustin Johnson

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Dustin Johnson walks away from the practice green during the 2012 Tour Championship at East Lake Golf Course in Atlanta, where he tied for third with Sergio Garcia. (Sara Caldwell / The Augusta Chronicle)

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Davis Love III, center, waves to the crowd after sinking his putt as Dustin Johnson, left, sets up to putt on the eighth hole on the first day of the AT&T National golf tournament held at Congressional Country Club, Bethesda, Md., Thursday, June 28, 2012. (Andrew Harnik/The Washington Times)

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Dustin Johnson lines up a putt on the eighth hole on the first day of the AT&T National golf tournament held at Congressional Country Club, Bethesda, Md., Thursday, June 28, 2012. (Andrew Harnik/The Washington Times)

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Dustin Johnson tees off on the seventh hole on the first day of the AT&T National golf tournament held at Congressional Country Club, Bethesda, Md., Thursday, June 28, 2012. (Andrew Harnik/The Washington Times)

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Dustin Johnson shot a final-round 66 to hold off John Merrick by a stroke in the St. Jude Classic in Memphis, Tenn. Johnson finished 72 holes at 9-under 271. (Associated Press)

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Dustin Johnson hits his tee shot on the 12th hole during the final round of The Barclays golf tournament Saturday, Aug. 27, 2011, in Edison, N.J. (AP Photo/Rich Schultz)

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Dustin Johnson was struck by misfortune in majors last year at the U.S. Open and PGA Championship. (Associated Press)

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Darren Clarke (right) of Northern Ireland and Dustin Johnson of the United States line up their putts on the 10th green during the final day of the British Open Golf Championship at Royal St. George's in Sandwich, England, on Sunday, July 17, 2011. (AP Photo/Peter Morrison)

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Tiger Woods, right, of the U.S. plays a shot as team members Hunter Mahan, left, Dustin Johnson, second right, and U.S. team captain Corey Pavin look on during a practice round at the 2010 Ryder Cup golf tournament in Newport, Wales, Tuesday, Sept. 28, 2010. The tournament starts Friday Oct. 1. (AP Photo/Jon Super)

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Dustin Johnson watches his tee shot on the fifth hole Sunday during the final round at the BMW Championship golf tournament in Lemont, Ill. (Associated Press)

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Dustin Johnson hits from the crowd on the 18th hole during the final round of the PGA Championship golf tournament Sunday, Aug. 15, 2010, at Whistling Straits in Haven, Wis. Johnson was given a two-shot penalty for grounding his club before the shot, and missed the playoff. (AP Photo/Eric Gay)

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Dustin Johnson talks with rules official David Price on the 18th hole during the final round of the PGA Championship golf tournament Sunday, Aug. 15, 2010, at Whistling Straits in Haven, Wis. Johnson was later assessed a two-stroke penalty for grounding his club in a hazard on the hole.(AP Photo/Charlie Neibergall)

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Dustin Johnson talks with rules official David Price on the 18th hole during the final round of the PGA Championship golf tournament Sunday, Aug. 15, 2010, at Whistling Straits in Haven, Wis. Johnson was later assessed a two-stroke penalty for grounding his club in a bunker on the hole. (AP Photo/Charlie Neibergall)