Game Shape gets reset to Respectable in the off season and will stay that way after the first training update no matter how many minutes he played. The key is what you plan to do with him in your Conference Final which is played this Saturday. You wouldn't be able to play him a full game in that game and also game 1 of the League Finals because that would give him 96 minutes for the week. If he plays with a backup in the Conference Final he might get about 30-35 minutes, then if he plays 48 minutes in Game 1 of the League Championships. 80 minutes wouldn't be ideal but you might have to risk it.