Calling in rules infractions during telecasts of golf tournaments has become part of the viewing experience.
During the Masters in April, the phone lines were buzzing with viewers questioning Tiger Woods' drop on the 15th hole in the second round on Friday.
The next morning, Woods was summoned to Augusta National and there were rumors that the 14-time major winner was going to be disqualified.
Turned out that Woods was ruled to have committed an infraction and was assessed a two-stroke penalty.
Gotcha!
If you see a rules infraction during the U.S. Open, here are the numbers to call:
* USGA: 908-234-2300, ext. 1387
* Merion Golf Club: 610-642-5600
* NBC Sports/The Golf Channel: 407-355-4653