Eastern League
The Panthers were preceded by Worcester, Massachusetts State Association (1884); Worcester Grays, New England League (1888); Worcester, Atlantic Association (1889-1890); Worcester, New England League (1891, 1894, 1898); Worcester Farmers, Eastern League (1899-1900); Worcester Quakers, Eastern League (1901); Worcester Hustlers, Eastern League (1902); Worcester Riddlers, Eastern League (1903); Worcester Reds, Connecticut League (1904); Worcester Busters, New England League (1906-1915); Worcester Busters, Eastern League (1916-1917) and the Worcester Boosters, Eastern League (1918-1922).