Team Logo. The Casper Rockies were a team in the Pioneer League. They were the Rookie affiliate of the Colorado Rockies. In 2008 they changed their name to the Casper Ghosts. Retrieved from "https://prosportsteams.fandom.com/wiki/Casper_Rockies?oldid=16572" Categories: Former PL Teams Teams in Wyoming Teams in Casper Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.