You can use the good old "cache" with Google which will give you the box score of the game you want to know.
Also, Sonicboomer, many teams play in lead up tournaments, so you can find their roster from there. Check Southern Peninsula, Geelong and even some pre-grading games have box scores in PlayHQ, see Diamond Valley pre-season hit-out. Then you can build a team box score based on player stats.
For grading two, and even for EDJBT this weekend, I have all the box scores from our opponents, so I know who scores, who fouls and who hit 3PT's. I also know head to head match ups.
But agree, don't see why they can't keep them up somewhere....