A 34-year-old man was stabbed in the back Wednesday night by armed robbers in the city’s Roseland neighborhood making him one of three people whom fell victim to robbers throughout Chicago, police said. About 9:10 p.m., robbers approached the man with a knife and a gun in the 200 block of East 104th Street. When he attempted to run away, he was stabbed in the back. The robbers took his wallet ...