With an off day‚ Chicago city officials close the gates at West Side Grounds in the middle of the series with the Giants. The reason is that city ordinances state that no fans are allowed to sit or stand in the aisles.

On May 23, 1906 — With an off day‚ Chicago city officials close the gates at West Side Grounds in the middle of the series with the Giants. The reason is that city ordinances state that no fans are allowed to sit or stand in the aisles.

Source:
Baseball Reference May 23