Dustin Johnson at the PGA

Weep for Johnson if you must, but rules are rules . This article misses the point. My buddy, Gregg McHatton, believes the PGA of America (which runs this tournament, not the Tour or USGA) dropped the ball here. He was telling me how USGA (for the U.S. Open, U.S. Amateur, etc....) officials follow the leaders on the last day and advise them on everything in order to avoid this very problem. Where was the PGA official that was following this group? Why didn't he run up to Johnson and tell him it was a bunker?