Sweeney has had his struggles when it comes to drafting (2015), but one thing he has done well, is icing a competitive team for veterans like Patrice Bergeron, David Krejci and Brad Marchand.
While every player he has acquired is a top six player or top four defenseman, while Coyle and Hathaway are the players you need in the bottom six. All have signed substantial extensions to stay in Boston, as well.
This season, in particular, Sweeney managed to retain all of his top prospects, ensuring that the future of the team's system appears promising