The Proving Grounds MMA event, hosted by Extreme Maximus Boxing Promotions, took place in Cedar Rapids, Iowa, at the Alliant Energy Power House on May 20, 2023. This exciting event featured 8 thrilling fights, showcasing talented fighters from the region. Fans experienced intense matchups, memorable moments, and a celebration of mixed martial arts in a vibrant atmosphere. Don't miss out on future events from Extreme Maximus Boxing Promotions!