Mark Bartelstein, Portis' agent, says his client "unintentionally" took a Tramadol pill instead of a different league-approved pain medication called Toradol last fall to treat an elbow injury and ...

Portis and his agent claim the positive test was a result of mistakenly taking Tramadol, believing it to be the NBA-approved pain medication, Toradol. Tramadol is a class IV controlled substance ...