Team Logo. The Joliet Slammers are a team in the Frontier League. They get their name from the prisons in Joliet. They won the league championship in 2011. Retrieved from "https://prosportsteams.fandom.com/wiki/Joliet_Slammers?oldid=11960" Categories: Frontier League Teams Teams in Illinois Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.