STOCKTON — A teenage girl’s statement is key evidence in the slaying of a 23-year-old young father and would-be pastor, who was struck by gunfire last year while driving home from work.Former Edison High School football star 17-year-old Keith Denegal Jr. sits in a courtroom charged with murder in the 2014 fatal shooting of Jesus Villegas Mendoza.The girl’s account led to Denegal’s arrest days after the shooting, testimony in a Monday preliminary [...]