Claim: The Elgin Kittens has the highest winning percentage in the 1910 Northern Association baseball with a PCT score of .649, followed by Muscatine Pearl Finders (the last moniker of the minor league baseball teams that played in Muscatine, Iowa from 1910–1916) with .638.
Evidence: The Muscatine Muskies was the last moniker of the minor league baseball teams that played in Muscatine, Iowa from 1910–1916. The Northern Association was a Class D minor league. It began and ended play in 1910, not even lasting the full season, disbanding on July 19. Elgin Kittens .649 Muscatine Pearl Finders .638