Original: He wrestled in Mexico and Japan for several major professional wrestling promotions in the United States Guerrero wrestled in Extreme Championship Wrestling ( ECW ) , World Championship Wrestling ( WCW ) , and in World Wrestling Entertainment ( then WWF , later renamed to WWE ) .
Simplified: Guerrero 's first break came in late 1994 when the owner of Extreme Championship Wrestling , Paul Heyman , noticed him and Art Barr .