Forward Jeremy Cameron has been ruled out for the remainder of the season with a hamstring injury.
Cameron tore his left hamstring in the second quarter of the loss to the Crows last week, sitting on the sidelines for the second half of the match.
Cameron had trouble with his opposite hamstring late in the season, restricting him to 19 games for 2017. He kicked 45 goals.
The GIANTS take on West Coast in a Semi-Final at Spotless Stadium on Saturday night with the winner to progress to a Preliminary Final.
Ruckman Shane Mumford is seeing a specialist on Monday on a foot injury with the club expecting to be in a better position to comment on his availability later in the day.