Horse name on one axis and numerical range on the other axis. One thing I am considering is letting raw figures scale themselves, ie; Last Speed. User gives the factor a weight of 100. Horse has speed rating of 85 that horse gets 85% of the factor weight. Next horse could have say a speed rating of 80, That one would earn 80% of the factor weight. And so on for however many factors the user had in their handicapping object. Then add the earned factor numbers together and arrive at a fair odds line. Some tweaking to the line may be needed, I'm not sure.
Handi