Chester teams hosted minor league home games at Union Park.
[10] Chester returned to play as members of the 1901 Class D level Pennsylvania State League.
[12] In 1904, the Chester team played as members of the Independent level Pennsylvania League.
[13][14] The Chester team played in the 1907 Independent level Atlantic League.
Joseph Senior, John Castle, Jack Quinn and James McGeehan were the managers.
[15][16] The 1908 Chester team became members of the Independent level Pennsylvania-New Jersey League.
[20] The Chester minor league teams were noted to have played home games at Union Park.