Calgary Flames defenceman Dennis Wideman sent linesman Don Henderson to the ice when he checked him from behind during a game against the Nashville Predators.

In the second period Wednesday night, Wideman was skating toward the Flames' bench when he cross-checked Henderson, who had his back to the defenceman. Moments earlier, Wideman had taken a hit from the Predators' Miikka Salomaki.

It wasn't immediately clear if Wideman mistook Henderson for a Predators player or intentionally hit the linesman. There was no penalty called on Wideman on the play.

"I took a pretty hard hit down in the corner and had some pretty good pain in my shoulder and my neck and I was just trying to get off the ice and I was kinda keeled over and at the last second, I looked up and I saw him and I couldn't avoid it," said Wideman.

At the next stoppage, Wideman skated over to where the officials were gathered and apologized. "Throughout my career and I've been around for a few years, I think I've treated every official with the utmost respect and I would never intentionally try to hit a linesman or a ref or anything like that," Wideman added.

Wideman is in his 11th NHL season, and fourth with the Flames. The 32-year-old defenseman entered the game with 94 career goals, 275 assists and 471 penalty minutes. He has two goals, 19 points and 30 penalty minutes this season.

With files from CBC Sports