That's an assumption made by the author. Actually, this article from December says otherwise, and includes from Jeffress' agent, Joshua Kusnick. http://www.denverpost.com/marijuana/ci_24809226/medicinal-marijuana-striking-out-major-league-baseball The demands of their 162-game season grinds down Major League Baseball players, often turning nagging injuries into chronic ailments. But there is no provision in MLB's collective bargaining agreement with the players to allow use of marijuana for medicinal reasons. That frustrates agent Joshua Kusnick, who represents Jeremy Jeffress, a pitcher with the Toronto Blue Jays. Jeffress suffers from epilepsy. The seizures from that disease nearly ruined his career and could have cost him his life, until he discovered that marijuana helped him control his condition. He has since found another medication that has proved effective. "Had Jeremy not been able to use a suitable medication, the outcome would have been for us to pursue legal action," Kusnick said. "Basically, if he couldn't have found something other than pot to control his seizures, baseball would have said 'too bad.' Which is insane, because this was ultimately not a lifestyle decision by Jeremy. It was a life decision."