CALGARY - The Calgary Stampeders became the first team in the CFL to clinch a playoff spot for the 2015 post-season on Thursday.

The Stampeders were guaranteed a post-season berth when the Montreal Alouettes lost to the Ottawa Redblacks 39-17.

That result means the Stampeders, who will finish no lower than third in the West Division, can not be bumped from the playoff picture by Montreal in a crossover scenario.

It's the 11th year in a row the Stampeders have qualified for the playoffs. The B.C. Lions and the Alouettes are the only other teams who have qualified for the playoffs every year since 2005.