The Kroger Co. (NYSE: KR) yesterday announced the appointment of new presidents at three retail divisions effective immediately. Sam K. Duncan, 49, has been promoted to president of Fred Meyer Stores. He previously had been president of Ralphs Grocery Company's supermarkets division in Los Angeles since 1998. Prior to that, he had spent six years with Fred Meyer, holding a variety of senior management positions with the retailer, including Executive Vice President of the Food Group. Mr. Duncan took over at Ralphs following its acquisition by Fred Meyer, Inc. in 1998.