The Utah Jazz announced in a press release on Monday that they have signed five-year-old JP Gibson to a one-day contract to attend their Monday night team scrimmage. Gibson, who was diagnosed with acute lymphoblastic leukemia in 2012, will be in uniform and join the Jazz on the bench for tonight’s open scrimmage at 6:30 p.m. at EnergySolutions Arena. He will sign his contract with Jazz President Randy Rigby at 5:30 p.m. in the Jazz interview room (Room 145), adjacent to