A 19-year-old man was shot and killed Saturday in Auburn Gresham.The man was inside a home about 5 p.m. in the 7700 block of South Racine Avenue when someone in a passing car fired shots, striking the man in the head, Chicago police said. He was pronounced dead at the scene, police said. He was iden tified as Michael Rounds Jr. by the Cook County medical examiner's office.Area detectives are investigating. ...read more read less