At&T

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Hunter Mahan hits from the 13th tee during the second round of the AT&T National at Congressional Country Club in Bethesda, Md., on Friday, June 29, 2012. (AP Photo/Patrick Semansky)

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Chris Couch, shown during the Byron Nelson Championship, said Friday's Round 2 at the AT&T National was one of the hottest rounds he's every played, as temperatures reached triple digits at Bethesda's Congressional Country Club. (AP Photo/LM Otero)

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Tiger Woods watches his drive from the fourth tee during the second round of the AT&T National at Congressional Country Club in Bethesda, Md., on Friday, June 29, 2012. (AP Photo/Nick Wass)

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All eyes were on Tiger Woods, host of the the AT&T National, as he teed off on the 10th hole. Woods carded a 1-over 72 and is five shots back of Bo Van Pelt, whose 24 putts were tied for fewest in the field. (Ryan M.L. Young/The Washington Times)

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Bo Van Pelt shot a 4-under 67 to take the lead after Day 1 at AT&T National on Thursday. (Andrew Harnik/The Washington Times)

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Erik Compton tees-off on the first hole of a pro-am before the AT&T National golf tournament held at Congressional Country Club, Bethesda, Md., Monday, June 25, 2012. (Andrew Harnik/The Washington Times)

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Tiger Woods starts his round in the afternoon 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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Tiger Woods hits a tee shot on the fourth hole at Congressional Country Club during first round play of the AT&T National golf tournament, Bethesda, Md., Thursday, June 28, 2012. (Ryan M.L. Young/The Washington Times)

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Tiger Woods waits for his group to tee off on the first hole as he begins his round 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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Billy Hurley III waves to the crowd after hitting a chip shot on the sixth hole at Congressional Country Club during first round play of the AT&T National golf tournament, Bethesda, Md., Thursday, June 28, 2012. (Ryan M.L. Young/The Washington Times)

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Beau Hossler hits an approach shot at Congressional Country Club during first round play of the AT&T National golf tournament, Bethesda, Md., Thursday, June 28, 2012. (Ryan M.L. Young/The Washington Times)

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Billy Hurley III tees off on the sixth hole at Congressional Country Club during first round play of the AT&T National golf tournament, Bethesda, Md., Thursday, June 28, 2012. (Ryan M.L. Young/The Washington Times)

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Vijay Singh watches his approach shot on the twelfth hole at Congressional Country Club during first round play of the AT&T National golf tournament, Bethesda, Md., Thursday, June 28, 2012. (Ryan M.L. Young/The Washington Times)

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Vijay Singh hits an approach shot on the eleventh hole at Congressional Country Club during first round play of the AT&T National golf tournament, Bethesda, Md., Thursday, June 28, 2012. (Ryan M.L. Young/The Washington Times)