Team Logo. The Missoula Osprey are a team in the Pioneer League. They are the Rookie affiliate of the Arizona Diamondbacks. They won the championship three times since their first one in their first season. Retrieved from "https://prosportsteams.fandom.com/wiki/Missoula_Osprey?oldid=17085" Categories: Pioneer League teams Teams in Montana Teams in Missoula Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.