Logos and uniforms of the Pittsburgh Steelers "Steagles"; the team's colors at that time were green and white as a result of wearing Eagles uniforms. These are the colors of the city's official flag which are the colors of the city's namesake Sir William Pitt. The colors black and gold are also representative of the two ingredients to create steel, coal and iron ore. Originally, the team wore gold colored helmets and black jerseys. Unique to Pittsburgh, the Steelers' black and gold colors are now shared by all major professional teams in the city, including the Pittsburgh Pirates in baseball and the Pittsburgh Penguins in ice hockey.
Baseball in the United States The city was also host to two other highly popular baseball teams in the National League, the Brooklyn Dodgers and the New York Giants, before their transfer to California beginning with the 1958 season. The Yankees' chief rivals, the Boston Red Sox, also enjoy a huge following in Boston and throughout New England. The fierce National League rivalry between the former Brooklyn Dodgers and New York Giants was transferred to the West Coast when the teams became the Los Angeles Dodgers and the San Francisco Giants, and California has always been among the US states which have supplied the most