Team Logo. The New Britain Rock Cats are a team in the Eastern League. They are the Double-A affiliate of the Colorado Rockies. In 2016, they will move and become the Hartford Yard Goats. Retrieved from "https://prosportsteams.fandom.com/wiki/New_Britain_Rock_Cats?oldid=14320" Categories: Eastern League teams Teams in Connecticut Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.