Graded Stakes Winners Fluctuate by Sire's Crop Yearhttp://cs.bloodhorse.com/blogs/truenicks/archive/2014/06/30/graded-stakes-winners-fluctuate-by-sire-s-crop-year.aspxThe quality of the mares that are bred to a stallion have a measurable effect on their production of stakes winners.enCommunityServer 2007.1 (Build: 20917.1142)