PITTSBURGH (AP) – A person with knowledge of the search tells The Associated Press that Tulsa coach Todd Graham is emerging as the top candidate to become Pitt’s third football coach in a month.  The person spoke Monday on condition of anonymity because Pittsburgh has made no announcement about the search.  Graham is the only coach known to have had two interviews with Pitt officials, and he has met with Chancellor Mark A. Nordenberg – a requirement for any finalist. Nordenberg became involved in the search after athletic director Steve Pederson’s hand-picked choice, Mike Haywood, was fired Jan. 1 following his arrest on a domestic violence charge. Haywood was hired in mid-December.  Graham has a 36-17 record in four seasons at Tulsa.