Saginaw teams were members of the
Central League (1948–1951),
Michigan State League (1889, 1897, 1926, 1940–1941)
Michigan-Ontario League (1919–1926)
Southern Michigan League (1906, 1908–1915)
Interstate Association (1906)
International League (1898, 1900) Ohio-Michigan League (1893) and
Northwestern League (1884). Minor league baseball in Saginaw started in 1884, with the
Saginaw Greys. The team had a variety of monikers: Jacks (1951),
Bears (1948–1950), White Sox (1941), Athletics (1940), Aces (1919–1926), Ducks (1913–1916), Trailers (1912), Krazy Kats (1911), Wa-was (1908–1910), Salt Eaters (1900), Braves (1898), Lumberman (1896–1897), and Alerts (1893). The
Saginaw Alerts were disbanded on June 11, 1893. The 1902
Saginaw White Sox were a Michigan State League team that was relocated to
Jackson, Michigan on July 20, 1902. In 1912, the
Saginaw Trailers were disbanded with a 19–44 record on July 13, as their ballpark was flooded. In 1914, the
Saginaw Ducks won the Southern Michigan League championship with a 90–55 record. In 1915 the league disbanded mid–season with the Ducks having a 31–38 record. The
Saginaw Aces won the 1919 Michigan-Ontario League Championship, finishing with a record of 77–32. The 1922 Saginaw Aces finished 74–58 and lost in the Finals. The 1940
Saginaw Athletics finished second in the Michigan State at 53–48. The Athletics made the Finals, which were cancelled by weather. The final Saginaw minor league team, the
Saginaw Jacks finished third in the 1951 Central League with a 79–58 record. The Central League folded after the 1951 season. Saginaw has not hosted another minor league team. ==The ballparks==