{"name":"What is the basic unit of play for roller derby?", "url":"https://www.quiz-maker.com/QPREVIEW","txt":"What is the basic unit of play for roller derby?, A Skater whose injury alters the flow of the game (for example a Jam being called) more than once, The Head Referee may declare that a team has forfeited the game if that team has ___ or fewer Skaters eligible to participate, or refuses to field Skaters on the track to continue play.","img":"https://www.quiz-maker.com/3012/images/ogquiz.png"}