In 1980, CV Productions, Inc. created the first regulated MMA league in the United States, called "Tough Guy Contest", which was later renamed "Battle of the Superfighters". The company sanctioned ten tournaments in Pennsylvania. However, in 1983 the Pennsylvania State Senate passed a bill prohibiting the sport. In 1993, the Gracie family brought Brazilian jiu-jitsu, developed in Brazil from the 1920s, to the United States by founding the Ultimate Fighting Championship (UFC) MMA promotion company in 1993. The company held an event with almost no rules, mostly due to the influence of Art Davie and Rorion Gracie attempting to replicate Vale Tudo fights that existed in Brazil and would later implement a different set of rules (example: eliminating kicking a grounded opponent), which differed from other leagues which were more in favour of realistic fights.