A ball thrown from the stands causes moment of confusion in Braves-Giants game

An overexuberant fan had people seeing double during the game between the Atlanta Braves and San Francisco Giants. A ball was thrown on the field from the stands on a sacrifice fly by the Braves in the fourth inning Friday night, leading to a brief moment of confusion with two balls on the field at once. The play in question came with the bases loaded and one out when Sean Murphy hit a line out to right field.