1B Mike Jacobs, currently playing for the Colorado Springs Sky Sox in the Pacific Coast League, is the first North American professional athlete to test positive for human growth hormone. He receives a 50-game suspension from Major League Baseball, and is released by the parent Colorado Rockies.

On August 18, 2011 — 1B Mike Jacobs, currently playing for the Colorado Springs Sky Sox in the Pacific Coast League, is the first North American professional athlete to test positive for human growth hormone. He receives a 50-game suspension from Major League Baseball, and is released by the parent Colorado Rockies.

Source:
Baseball Reference August 18
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