The Saskatoon Roller Derby League Has a New Home 21. Jun 2011 Fitness Focus Fitness Focus is proud to be the official gym of the Saskatoon Roller Derby League. The Saskatoon Roller Derby League (SRDL) is a not-for-profit athletic organization, which provides an equal-opportunity for all women to engage in a sport that promotes athleticism and fitness, female empowerment, and community involvement. As they approach the upcoming season, you can expect to see more and more of the Roller Derby girls around the gym.http://www.saskatoonrollerderby.com/