‘KeyBank Center emptied well before the Columbus Blue Jackets concluded their 9-4 drubbing of the Sabres on Tuesday night, a few stragglers from the announced crowd of 14,888 left groaning at the horn. The quiet discouragement echoed louder booing that came in flurries over the preceding hours of the home team’s demoralizing defeat against one of the few NHL opponents with a worst record this season. And a growing chorus was heard calling for the coach’s head.’