ROCKPORT, Maine — For the fifth consecutive year, the all-female roller derby league, the Rock Coast Rollers, will host Maine’s only roller derby tournament recognized by the Women’s Flat Track Derby Association. The tournament, Coastal Chaos, has drawn teams from across the globe to the Midcoast Recreation Center in Rockport for one weekend of serious roller derby. “We’re a small league from a small town, but the fact that we have these leagues from pretty large cities traveling here, I think that just shows that the enthusiasm is very real,” said Amanda Fagan, a member of the Rock Coast Rollers league. Coastal Chaos kicks off Friday in Rockport and will roll through the weekend.