ELLENTON, Fla., June 10, 2014 /PRNewswire/ -- Feld Entertainment, the worldwide leader in live family events, and online shopping site, Overstock.com, today announce a partnership in support of one of the most ambitious live event experiences in history, Marvel Universe LIVE!  This sponsorship agreement will bring Overstock.com front and center of the 85-city tour, which debuts in July in Tampa, FL before embarking on an extensive national rollout.  Los Angeles-based sports and entertainment sales firm, Premier Partnerships, brokered the partnership on behalf of Feld Entertainment.