And another thing that is not looked at closely is a lot of these stallions may produce graded winners, but how many donkey's? If you got a horse that puts off a very high % of good runners (not necessarily graded winners) v. donkeys (and a large number of total offspring), with many diff. mares including mares that are not highly reguarded... Then I am more apt to say there is clearly many genetic components that this sire has to put out good runners.

All I can say is I am glad people put so much emphasis on pedigree.