Sabres sign free agent D Mike KostkaSource: AP ‘Kostka, 22, just completed his senior season at the University of Massachusetts with a career-high nine goals, and led the Minutemen with a plus-11 rating.’ Related posts: Sabres sign Kostka Sabres re-sign restricted free agent Kalinin Rangers acquire free agent centers Drury and Gomez Atlanta Thrashers Sign Free-Agent Defenseman Richard Smehlik Sharks sign free agent RW Grier, C Brown