Upcoming Events Midwest Promotions Gun and Knife Show September 21 @ 9:00 am - 5:00 pm Midwest Promotions Gun and Knife Show September 22 @ 9:00 am - 4:00 pm 2019 Rainbow Mass September 25 View All Events Calendar of Events Find out what’s happening at the Sportscenter on our Calendar of Events. Book the Arena The Sportscenter offers affordable rates for ticketed and non-ticketed events. Learn more. Sponsorships Connect your brand to memorable events! Learn about sponsorship opportunities.