The National Hockey League’s Department of Player Safety announced the suspension on Friday.
The incident occurred at 14:04 of the third period and began when Wings forward Luke Witkowski went after Calgary’s Brett Kulak late in an 8-2 victory. The fight escalated into a brawl when Witkowski, who had been escorted off the ice by the linesmen, attempted to return to the fray and was jabbed by the stick of Tkachuk.
Tkachuk is considered a repeat offender under the terms of the collective bargaining agreement and, based on his average annual salary, will forfeit US$11,280.49.
The NHL also suspended Witkowski for 10 games, costing him more than $40,000 in lost salary, for his actions.