Former NHL linesman Don Henderson has filed a $10.25-million lawsuit against the Calgary Flames and defenseman Dennis Wideman, reports TSN's Rick Westhead.

The suit is in response to an incident that occurred last season, where Wideman hit Henderson from behind:

Wideman was suspended 20 games for the incident, however an appeal later reduced his time away to 10 games. At the time of the appeal ruling, Wideman had already served 19 games. The forfeited salary for the additional nine games was returned to Wideman.

Henderson missed the remainder of the season with a concussion and has not officiated any games this season.

These are injuries claimed by referee Don Henderson in lawsuit (as well as head injury and concussion) #nhl pic.twitter.com/T980Bl1FEc — CTV - Chris Epp (@CTVchrisepp) April 20, 2017

Wideman appeared in 57 games with the Flames this season.