This page is a place to keep a running list of what I call “vestigial COTOBs.” A vestigial COTOB is a relatively rare phenomenon that occurs when an COTOB (or DimDer) continues to use the same name even when they get a new parent club.
As of this writing, this is by no means a comprehensive list. I will continue to add to it, as I unearth more of them.
Idaho Falls Braves Kept Atlanta’s nickname despite later affiliation with San Diego
San Antonio Brewers Kept Milwaukee’s nickname despite later affiliation with Cleveland and Texas
Utica Braves. Were founded as a Boston affiliate in 1939, but kept the name as a Tigers and Phillies affiliate before becoming the Utica Blue Sox. Incidentally, the Blue Sox would become a Vestigial DimDer (see below).
Vermont Expos. After the 2004 season, the parent club moved from Montréal to Washington, but the New York-Penn League team kept the old COTOB for one more season.
Colorado Springs Sky Sox (originally with White Sox, identity was resurrected with other MLB teams)
Erie SeaWolves (originally with Pirates, continued with other teams)
Evansville Triplets (originally with Twins, continued with Brewers and Tigers)
Newark Co-Pilots (originally with Seattle Pilots, continued with Brewers)
Louisville Redbirds (originally with Cardinals, continued with Brewers for one season)
Rochester Red Wings (originally with Cardinals, continued with other teams)
Salem Avalanche (originally with Rockies, continued with Astros)
Honorable mention: teams that took their nickname from the Philadelphia Phillies’ unofficial Blue Jays nickname from the 1940’s.
Utica Blue Sox (The old DimDer was resurrected and used as an affiliate of several teams–including the Red Sox and White Sox, making for a sort of non-DimDer situation.)
Honorable mention to the honorable mention. A Non-Vestigial DimDer.
The Green Bay Bluejays were a new team in 1946 and were affiliated with the Phillies. Just like these others, right? Nope. There was a team called the Green Bay Bluejays in 1940 (called the Blue Sox in ’41) that existed before Philadelphia started dabbling with the bird nickname. This would make them the rare pre-emptive DimDer. So even though they were called the Bluejays after breaking up with Philly and affiliating with Cleveland, this would not be considered vestigial since it was a non-DimDer to begin with.