System,

I guess the only way to find out how they create their ratings or who they get them from is to ask them. Whether they give you an answer or not , I dont Know. As you can see from the example I gave, there are some classes of race where they use either a different figure or they start with a base figure for that class and add or subtract a point or two depending on how strong or weak the race is, this is where things would start getting complicated, if doing your own ratings. All you could do is look at a race and the horses in it, see whether those horses rated in future events and then decide whether the race in question was a strong or weak one. Thatis why I use the free ratings given by some websites. Each provider of ratings will say there the most accurate but I guessits just trial and error.

I use the most recent run that compares to todays run. But by this mean distance and going, and if its in the same class then thats a bonus. Once againit comes down to which factorsyou rate more importantly, thats why if everyone on this forum produced a set of ratings and prices for the same race, I doubt whether any two would be identical.

You would get some horses with the same rating but not all.