Maine Roller Derby (MRD) is Maine’s first women’s flat track roller derby league, which is a proud member league of the Women's Flat Track Derby Association (WFTDA) and are one of the hundreds of leagues across the nation that have embraced the quickly-growing sport of roller derby as it is skated on a flat track. A year later MRD played its first home season at the Portland Expo. Since then, the league has hosted a season each year, inviting teams from all over New England, Canada and as far as Ohio to play at the Expo. Bouts at the Expo average a crowd of 600-700 fans.