That's what I meant -- it's a few points per letter grade in a game. For me it seems to go up at the end of non-con (to B) and then again with a few games left in conference play (to B+, but as I have often have a 1-west schedule, I don't have games the last two dates). And then it resets at B- to start the year. I don't know the exact winning percentage you need, though.