Balls could be tricky, secially the first one. First ball specify salary of player and for young players differences are less than 500$ for each grade and that could be 1-2 point in skills. Some skills are "cheaper" than others so I can image player with B grade with lower TSP than A grade. And that's the place for match stats which could say about player strong and weak points. All together could give the picture how player may look, but of course there are also space for some random stuff ;)