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CHICAGO, IL - APRIL 19: An altercation between the Chicago Blackhawks and the St. Louis Blues breaks out at the end of the game after Game Four of the Western Conference First Round during the 2016 NHL Stanley Cup Playoffs at the United Center on April 19, 2016 in Chicago, Illinois. The Blues defeated the Blackhawks 4-3. (Photo by Jonathan Daniel/Getty Images)

CHICAGO, IL - APRIL 19: An altercation between the Chicago Blackhawks and the St. Louis Blues
breaks out at the end of the game after Game Four of the Western Conference First Round during the 2016 NHL Stanley Cup Playoffs at the United Center on April 19, 2016 in Chicago, Illinois. The Blues defeated the Blackhawks 4-3. (Photo by Jonathan Daniel/Getty Images)