Rangers' Kevin Shattenkirk out 2-4 weeks with separated shoulderShattenkirk has struggled on the blueline this season12/12/2018, 5:17 PMNew York Rangers defenseman Kevin Shattenkirk (22) skates with the puck during the first period of an NHL hockey game against the Washington Capitals, Friday, Dec. 8, 2017, in Washington. (AP Photo/Nick Wass) / Nick Wass/AP