ISG Field is a stadium in Mankato, Minnesota, United States, with a capacity of 2,200.^[1] It is primarily used for baseball, and is the home field of the Mankato Moondogs (formerly the Mankato Mashers) of the Northwoods League, a collegiate summer baseball league. Bethany Lutheran College, Mankato West High School, Loyola Catholic School, and Mankato Area Youth Baseball Association also use the venue.^[1]

The stadium was built in 1961 as Key City Park. It was renamed for local sportswriter Franklin Rogers in 1977.^[2] The first Northwoods League game at the field was played in June 1999. New additions to the park prior to 2018 included lights, a roof over the grandstand, hospitality decks down the left and right field lines, and additional seating.^{[citation needed]}

Between the 2017 and 2018 MoonDogs seasons, the ballpark received $4 million in upgrades. Renovations include a fully artificial turf playing surface, new concession stand, a video board, a new hospitality deck, and other amenities.^[3] The MoonDogs played their first game at the renovated stadium on May 29, 2018.^[4]

It was reported in October 2020 that naming rights had been sold for 2021 and beyond to ISG, a Mankato firm chaired by one of the MoonDogs' owners, resulting in a name of ISG Field.^[2]

• "Franklin Rogers Park – Mankato Minnesota – Home of the Mankato Moondogs". Digitalballparks.com. August 11, 2001. Retrieved December 23, 2011.

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  ISG Field Dugout
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  ISG Field Seating
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  ISG Baseball Field
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  ISG Field Fan Seating