OMAHA, NE - JULY 13: A USGA rules official sets a tee marker during the third round of the 2013 U.S. Senior Open Championship at Omaha Country Club on July 13, 2013 in Omaha, Nebraska. (Photo by Scott Halleran/Getty Images)
OMAHA, NE - JULY 13: A USGA rules official sets a tee marker during the third round of the 2013 U.S. Senior Open Championship at Omaha Country Club on July 13, 2013 in Omaha, Nebraska. (Photo by Scott Halleran/Getty Images)