Professional wrestling in the United States, until the 1920s, was viewed as a legitimate sport. This view did not endure into the 1930s, as professional wrestling became identified with modern theatrics, or "admitted fakeness" ("kayfabe"), moving away from being a showcase for true competition. The scripted nature of the art has made critics view it as an illegitimate sport, particularly in comparison to boxing, mixed martial arts, amateur wrestling, and the real sport itself, wrestling. No major promoter or wrestler denies that modern professional wrestling has predetermined match outcomes.