On Sunday , the Arizona Derby Dames Banked .
Flat Track Roller Derby League is hosting tryouts for players and referees at Mesa Skateland in preparation for its 2012 - 2013 season .
On Sunday , the Arizona Derby Dames Banked and Flat Track Roller Derby League is hosting tryouts for players and referees at Mesa Skateland in preparation for its 2012 - 2013 season .