The Calgary Flames and Kansas City Mavericks have had an affiliation agreement since the 2017-18 season. That officially came to an end on July 28, when the Mavericks announced on a Facebook Live press conference that they will be switching directions for their affiliation and will be with the Seattle Kraken in a multi-year agreement starting the 2022-23 season.
Being an ECHL team, the Mavericks did not see a whole lot of highly rated Flames prospects, but at their peak, they were part of goaltending development for the long list of prospects the Flames had in their system back 4-5 years ago.