D. D. Miller is fascinated by roller derby. As the Derby Nerd he has been covering roller derby since 2009, travelling to games across Canada and the United States, including two world championships, reporting back to an ever-growing audience the details of the sport. In this entertaining and thorough book he explains roller derby to newcomers and charts the sport's rise from small groups of women looking for people to skate with over the Internet to the world presence it is today. Along the way he considers roller derby's roots in Riot Grrrl and DIY culture, and the importance of the LGBTQ community both inside and outside of the sport. This is a warm, thoughtful look at a sport that Miller understands intimately, which takes us beyond the costumes and showmanship, into the heart of what he feels may be the first truly feminist sport.