These are the organisational changes that have taken place in the offseason between the 1902 and 1903 Footnote League seasons:
- The Baltimore Orioles franchise has been relocated to New York and will be unofficially known as the Highlanders.
- The Chicago franchise in the National League has advised us that they wish henceforth to be referred to as the Cubs, while Cleveland’s nickname will be the Naps, effective immediately.