1) Baltimore Federal: Ron Selter had distance information and had a variation between the 1914 and 1915 season. These two fields replace the current one field.

2) Crosley Field - Cincinnati:  These five variations replace the current four variations between 1912 and 1970.

3) Municipal in KC: One more variation when the A's were in town from 1954-1967.  These two replace the one field.  Note this does not affect the Royal years.

4) Metropolitan in Minnesota: These three fields replace the current one from 1961-1981.

5) Olympic in Montreal: These two fields replace the current one from 1977-2003. The fences are actually the same, but the backstop is different.

6) Tiger in Detroit: One more variation found.  These three fields replace the two current from 1936-1999.