Injuries are causing concern across the NHL as several teams report player updates. Buffalo Sabres forward Jordan Greenway left after blocking a shot, and Coach Lindy Ruff is optimistic it’s not serious. Meanwhile, Detroit Red Wings defenseman Erik Gustafsson is sidelined long-term with an undisclosed injury, potentially sidelining him until the regular season concludes. Elmer Soderblom could return soon, being day-to-day. The Florida Panthers' Sam Bennett is expected to be fine after a scare, while the LA Kings' Trevor Moore is also day-to-day. The Vancouver Canucks' Thatcher Demko is on the verge of returning after a lengthy absence.