The Slammers began their inaugural season on May 19, 2011. As Will County's only professional sports team, The Slammers are dedicated to providing family-friendly, affordable entertainment. The Joliet Slammers are members of the Frontier League of Professional Baseball. The Frontier League is the oldest continuously operating independent professional league, founded in 1993. For more information about the Frontier League visit www.frontierleague.com. League championships 2 (2011, 2018) Division championships 2 (2011, 2016) Partnership opportunities with The Joliet Slammers are now available for 2020! Contact our VP of Sales and Marketing at JWilson@jolietslammers.com about these opportunities. To see the season schedule and promotions or to purchase tickets, please call (815)722-BATS (2287) or visit us online: www.jolietslammers.com. Follow us on Social Media to stay up to date on Promotions and Community Events! Facebook: /jolietslammers Twitter: @jolietslammers Instagram: @jolietslammers