The Orioles today announced that they have reinstated outfielder David Lough from the 15-day Disabled List. In a corresponding move, the Orioles have optioned right-hander Eddie Gamboa to Triple-A Norfolk. Lough, 29, was placed on the 15-day Disabled List to begin the season (retroactive to March 27) with a left hamstring strain. He made one rehabilitation appearance with Class-A Frederick and went 0-for-2 with a sacrifice fly while starting in left field for the Keys.