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Perhaps most impressive about 14-year-old Tianlang Guan? He was one of only two players in the field who did not have a three-putt green. Lee Westwood was the other. On the other end of the spectrum, Lucas Glover and Vijay Singh each had nine three-putts . . . Speaking of Guan, he has accepted a sponsor’s invitation to next week’s Zurich Classic in New Orleans. He has ties to the area, working with an instructor there last year and unsuccessfully trying to qualify for the US Open in Louisiana a year ago . . . After having the winner come out of the last final-round pairing in 19 of 20 years, it has now been three straight years in which the champion was not in the final group . . . Final-round television coverage gave CBS a 10.2 rating, up 26 percent from a year ago. ESPN, which televised the first two rounds, enjoyed smaller improvements.