Bill,

I can help you with something for Sportsman Zipform ratings...

1. Take the base Zipform Rating;
2. Add a point if the horse's speed is marked 'H';
3. Add a further point if the horse marked 'H' has drawn a barrier inside the 80% band (i.e. in a 10 horse field barriers 1 to 8). Note this applies to races with fields greater than 8 only;
4. Add a point if the horse is ridden by a jockey in the Top 5 of the premiership (by strike rate);
5. Deduct a point if the horse is weighted above the top Zipform rated horse.

Now you have an adjusted points table for the race, give the top rated horse a score of 100. Then give the next score 92, the next 84 and so on in multiples of 8.

Note, no horse can score less than 4. So, if there are more than 13 points difference between the top rater and the bottom raters, after the 13th, give each horse 4.

The as you suggested add these scores up and then divide each individual score to get a percentage chance for each horse in the race.

From here it is up to you as to what market percentage you wish to frame your prices.

Hope you find this of value.


Cheers,
Luckyboy


[ This Message was edited by: on 2004-05-20 08:02 ]