Steven "The Matador" Montador (1979 - 2015) was a Canadian professional ice hockey defenceman who played 571 games in the National Hockey League (NHL) for the Calgary Flames, Florida Panthers, Anaheim Ducks, Boston Bruins, Buffalo Sabres and Chicago Blackhawks before ending his career in 2014 as a member of the Kontinental Hockey League (KHL). Montador appeared in 52 games for the Blackhawks in 2011–12, however his season was ended after he suffered a serious concussion during a game. He required almost a full year to recover from the injury. Montador spoke openly of the depression he suffered following his concussion issues in Chicago, and according to his brother Chris, had spent a great deal of time researching the effects of head injuries. On February 15, 2015, Montador was found dead in his Mississauga home. According to his brother, "he just either stopped breathing or his heart went". Researchers studying Montador's brain noted that he had suffered from chronic traumatic encephalopathy (CTE), a degenerative brain condition that doctors have noted is caused by concussions.