Colorado Avalanche: News From Around the NHL August 6th, 2015

NHL asked to turn over data in concussion lawsuit — but much still remains unknown about head injuries in sports. [National Post]

Quebec City and Vegas invited to phase two of NHL expansion process. [TSN] {Video starts automatically}

Crosby and MacKinnon give Worlds checks to hometown. [NHL]

Four NHLers who could struggle on their new team. [Sportsnet]

Wild and Blackhawks make final plans for outdoor stadium game. [Toronto Sun]