The way manager Davey Johnson was talking Tuesday, it's not a guarantee that Harper will play. Johnson said Harper must go through a full workout before Johnson makes it official.
Harper took batting practice before the game against the Tigers on Tuesday, and he later tried to convince Johnson to let him enter the game against the Tigers.
"Can't you read, you are not on the board," Johnson said he told Harper.
Harper has not been in the lineup for six consecutive days because of a tight left calf.
Johnson said he is going to give Harper every chance to become the Opening Day right fielder. Harper is 5-for-11 (.455) in four exhibition games.