MLB announced today that former Pirates shortstop prospect JaCoby Jones has been suspended for 50 games following a second positive test for a "drug of abuse". The news may shed some light on the Pirates' decision to trade Jones to the Tigers last July in a deal for reliever Joakim Soria, in the event that his first positive test occurred during his time in the Pirates organization.
In contrast to its handling of positive tests for performance-enhancing drugs, MLB does not release the name of the specific substance involved in positive tests for drugs of abuse.