At&T

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Ken Duke watches his tee shot on the 15th tee during the first round of the AT&T National Golf tournament, Thursday, July 27, 2013, in Bethesda, Md. (AP Photo/Nick Wass)

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Roberto Castro watches his tee shot on the third tee during the first round of the AT&T National Golf tournament, Thursday, July 27, 2013, in Bethesda, Md. (AP Photo/Nick Wass)

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Billy Horschel tees off on the 15th tee during the first round of the AT&T National Golf tournament, Thursday, July 27, 2013, in Bethesda, Md. (AP Photo/Nick Wass)

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Billy Horschel acknowledges the gallery on the 15th green after putting during the first round of the AT&T National Golf tournament, Thursday, July 27, 2013, in Bethesda, Md. (AP Photo/Nick Wass)

**FILE** Tiger Woods casts a shadow as he hits out of a bunker on the second hole during the third round of the AT&T National golf tournament at Congressional Country Club in Bethesda, Md., Saturday, June 30, 2012. (AP Photo/Patrick Semansky)

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**FILE** Brendon Todd on the Spyglass Hill Golf Course during the second round of the AT&T Pebble Beach National Pro-Am PGA Tour golf tournament in Pebble Beach, Calif., Friday, Feb. 10, 2012. (AP Photo/Eric Risberg)

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Sam Saunders hits off the second tee of the Pebble Beach Golf Links during the second round of the AT&T Pebble Beach National Pro-Am golf tournament Friday, Feb. 10, 2012, in Pebble Beach, Calif. (AP Photo/Ben Margot)

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A downed tree provided the backdrop for the fifth fairway at Congressional Country Club during the final round of the AT&T National. Volunteers and spectators were kept away for Saturday's third round because of damage to the course from heavy storms in the region Friday night. (Ryan M.L. Young/The Washington Times)