Marlins activated RHP Juan Carlos Oviedo; placed him on the 15-day disabled list with a right elbow sprain. Oviedo was activated because his eight-week suspension for falsifying his identity came to an end. However, he suffered a sprained ulnar collateral ligament in his throwing elbow during a tuneup outing in the minors and isn't expected to pitch this season. It isn't yet known if he'll opt for Tommy John surgery.