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The International Association of Athletics Federation (IAAF) creates the first anti doping rule in any sport. It is the governing body of track and field.
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During the Winter Olympics the International Olympic Committee begins to test athletes. No athlete tests positive.
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After finally getting a reliable test the IOC bans the use of anabolic steroids. Testing begins at the 1976 Games at Montreal.
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World champion sprinter Ben Johnson of Canada tests positive and has his gold medal stripped. He is banned for 2 years. In 1993 he tests positive for a second time and is banned for life.
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Major League Baseball becomes the first major professional sport to ban the use of steroids.
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The MLB Players Association begins testing players for steroids. No players are suspended and the results are kept secret.
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MLB institutes punishments after a high number of players test positive for Performance Enhancing Drugs.
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The NFL becomes the first professional sports league to implement blood testing of its players for PEDs such as Human Growth Hormone.