MLB removes marijuana from drugs of abuse; will now test for opioids - ABC News
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MLB's new drug program will test players for opioids; minor-leaguers will no longer be tested for marijuana
M.L.B. Updates Drug Policy to Include Opioid Testing - The New York Times
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MLB will remove marijuana from list of 'drugs of abuse' and test for opioids under new drug agreement
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MLB Plans To Remove Marijuana From Banned Substances List For Minor Leaguers - Marijuana Moment
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