I don't think Sasser is a very good basketball player. Doesn't create for himself or others, doesn't score well, doesn't defend well. He does seem to shoot the 3 well, but that isn't good when its all you can do.
An even bigger reason not to play him is the Magic lineup. Game #1 saw 9 Magic players get on the floor. One was 6'5" one was 6'6" and the rest were 6'7" or above. We're already at a disadvantage running 6'1" Jenkins out there. You can't really afford to add a second 6'1" player in Sasser as well.
If the Pistons wanted more shooting then Green was the answer. He played 4m46s and in that time had 3 points and went to the line 4 times. He plays solid defense and shoots 38% from three. He played 0 minutes in the 2nd half.