Acuna (hamstring) belted a grand slam and drew a pair of walks in Thursday's rehab game in the rookie-level Florida Complex League.
It was the third rehab contest for Acuna, who went 0-for-6 in his first two games. He has yet to play the outfield, as Atlanta is bringing Acuna along slowly as he works his way back from his second injured-list stint this season caused by a left hamstring strain. If Acuna is activated for the beginning of the second half, Atlanta could initially use him only at DH.