The 2011 Canadian Football League season was the 58th season of modern Canadian professional football. Officially, it was the 54th season of the league. The complete schedule was released on February 18 and featured the defending Grey Cup champion Montreal Alouettes opening the season against the visiting BC Lions on Thursday, June 30, 2011. The season was among the most notable in the modern era for the competitiveness of the teams; going into the final week, five teams were tied for first place in the league, a first in modern CFL history. It was also the first time since 1982 that all teams finished with fewer than 12 wins in the regular season. As well, for the first time since 1950, the start of the modern era, all four teams competing in the divisional finals were different from the