MLB announces that the drug screens taken during the past baseball season tested positive in 5-to-7 percent of the 1,438 samples provided by the players. The results will set into motion a mandatory testing program for performance-enhancing drugs with punitive consequences for failure for the first time in baseball history.

This Day In Baseball

On November 13, 2003 — MLB announces that the drug screens taken during the past baseball season tested positive in 5-to-7 percent of the 1,438 samples provided by the players. The results will set into motion a mandatory testing program for performance-enhancing drugs with punitive consequences for failure for the first time in baseball history.

 

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Sources:
Baseball Reference November 13
National Pastime November 13
Retro Sheet
Hall of Fame
SABR Games Project