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Professional Baseball refers to the highest level of baseball competition, where players are paid to play the sport. It typically includes leagues such as Major League Baseball (MLB) in the United States, Nippon Professional Baseball (NPB) in Japan, and the Korean Baseball Organization (KBO) in South Korea. Teams in professional baseball compete against each other in organized leagues, with the goal of winning championships and showcasing the highest level of skill and talent in the sport. Professional baseball players are considered elite athletes and often have extensive training and experience in the sport.