With flat track roller derby leagues growing from 30 just a few years ago, to over 100 worldwide today, this new incarnation of an old sport is growing by leaps and bounds! [70] Although TV exposure was an important component of Roller Derby's revitalization, Seltzer didn't want to repeat the experience of mainstream professional sports organizations that had become dependent on TV; he used the medium only for exposure and publicity for the live matches, not a source of revenue for player salaries.[71]. The International Skating Union of America, a competitor of the International Skating Union, formed in 1907 partly in response. Photos of the 1946 roller skating marathon are in the 1946. NEW YORK CHIEFS in the Fall of '71, winning the title for the team before returing to the Bay Bombers in the summer of '72. She The Warriors may have debuted in Philadelphia in 1967, but the sport had been in the city since 1948. Roller DerbyHall of Fame & Museum,