The NHL is investigating an incident involving Tampa Bay Lightning forward Pontus Holmberg, who injured his left arm after crashing into an unlatched penalty box door during a game against the Buffalo Sabres. Lightning coach Jon Cooper expressed frustration over the incident, suggesting the penalty box operator should be fired for the dangerous situation. Holmberg did not return to the game and was seen with his arm in a sling. The Lightning, already missing several key players, also faced disappointment over the high number of penalties called during the match.
