Denton Mateychuk carried the puck into the offensive zone and beat Mrazek with a wrist shot from the high slot to extend the lead to 3-1 at 12:42.
“It's frustrating, it's unacceptable, it's embarrassing,” Smith said. “To a certain point it's getting embarrassing, so we have to continue to dig deep.”
Werenski scored on a breakaway at 13:51 of the third period to make it 4-1.
“Impressed? 100 percent. Shocked? No,” Columbus coach Dean Evason said of Werenski’s performance. “He’s just such an incredible athlete. His engine and all the emotions that he went through the last few days. I'm sure such great highs, obviously, and then a very big low, and he just slides back in and goes about his business and helps his team have success here tonight.”
Adam Fantilli scored at the top of the crease for the 5-1 final at 14:44.
“In the third we made a push, (Merzlikins) made some big saves when it was 3-1 and then they come right back,” interim Blackhawks coach Anders Sorensen said. “They get the fourth one and the wind took out of our sails a little.”
NOTES: Werenski tied Rick Nash (39) for the most multiassist games in Blue Jackets history. … Blue Jackets captain Boone Jenner assisted Werenski’s goal in his season debut after shoulder surgery on Oct. 9. Jenner played 16:56.