It's to do with the overrounds. The worse the overround the better the CSF will look when compared to the old multiplied odds (at least where fancied runners are concerned). The formula adjusts the price of each runner to make the overround equal a standard percentage per runner and then works with those odds.
It's to do with the overrounds. The worse the overround the better the CSF will look when compared to the old multiplied odds (at least where fancied runners are concerned). The formula adjusts the price of each runner to make the overround equal a s