Matinpalo injury adds to Senators' blue-line crisis

Nikolas Matinpalo's undisclosed apparent head injury became even more consequential after Ottawa finished the New Jersey win with only five defensemen. Jake Sanderson, Artem Zub and Cameron Crotty also remain unavailable, leaving the Senators heavily dependent on depth defenders and Thomas Chabot's workload as they face St. Louis in a back-to-back.