Last week , commissioner Gary Bettman received a Congressional letter seeking information on the league 's policies and protocol in this realm .
Crosby 's most recent injury comes at a time when concussions , and their link to CTE , is an increasingly thorny issue for the NHL .
Last week , commissioner Gary Bettman received a Congressional letter seeking information on the NHL 's policies and protocol in this realm .
Crosby 's most recent injury comes at a time when concussions , and their link to CTE , is an increasingly thorny issue for the NHL .