Found what I was looking for finally. Saw this at some point and it would be helpful for anyone looking to do this.
It is a list of the current top 100 prospects and their rankings on the 20/80 scale by baseball america. Plus some other sites I found just browsing for a bit
I'm finding it difficult to find 20/80 grades for players currently in the majors from when they were still considered prospects.
All the articles were interesting. Just as a sanity check on the article http://www.fangraphs...ale-sabr-style/
note that Carlos Marmol is listed as the example for relief pitchers with reallly poor control. He grades out as a 20 for control---3 standard deviations worse than the mean.