The dur/sta 10% guideline that noragar uses isnt completely accurate... I have an amazing SP his numbers are HOF quality in any world, guaranteed, but his dur sta sucks, 25 67 which with the above math means he should pitch 167 innings a year. Ive had him pitch just over 200 a few times. The formula might work for average pitchers, but for stars who are very effective at getting outs you can get 20% or more use out of him then what that formula states.