The Calgary Flames entered the NHL as the Atlanta Flames in 1972 and relocated to Alberta in 1980, sparking a fierce rivalry with the Edmonton Oilers. The two teams have a history of trades, including deals involving veteran players and goalies.

In recent years, the Flames and Oilers made high-profile swaps, with players like Milan Lucic and James Neal changing teams. These transactions showcase the intense rivalry between the two Alberta-based clubs and highlight the competitive nature of the NHL.