How do you see your grade with a champion?

I finished my first game after champion mastery came out, and was so excited to see what grade it was going to give me. But then I got the blank results screen that says things like mynoots. And it didn't show my grade from the new champion mastery system anywhere. I looked through my profile and saw that I got 1039 points, but I want to know if I got an A+ or an A or that kind of thing. Is there anywhere I can see it?