TrackMaster® Horse Ratings Specification

TrackMaster Horse Ratings Specification

TrackMaster Horse Ratings are an averaging of a horse's recent best past performances as described in detail below. To be included in the list, a horse must have raced in North America in the last 2 years. In order for a rating to be computed, a horse must be at least 3 years old and have at least 4 lifetime starts. The ratings range from 0.00 to 99.99

To calculate a TrackMaster Horse Rating, the following algorithm is used:

First, gather all of the horse's past performaces with speed ratings within two years of its last race of any kind

Speed ratings are available in a variety of TrackMaster products:

("10-Line Past Performances") TrackMaster Past Performances
("12-Line Platinum Past Performances") TrackMaster Platinum Past Performances
("Lifetime Past Performances") TrackMaster Lifetime Past Performances

Next, eliminate races with any kind of break, broken equipment, interference, inside pylons, etc
Of the remaining races, consider no more than the 8 most recent speed ratings and separate into two categories...

("Recent Ratings") speed ratings within 150 days of its last race
("Past Ratings") speed ratings that are >150 days and <= 2 years since its last race

BASE CASE: When there are at least 4 "Recent Ratings", compute an average as follows:

("Recent Ratings")

if 7, average the highest 4
if 5 or 6, average the highest 3
if just 4, average the highest 2

ALTERNATE CASE: When there are NOT at least 4 "Recent Ratings", but there is at least 1 "Recent Rating", compute a weighted average as follows:

("Recent Ratings")

If 3, average the highest 2 - then weight @ 70%
If 1 or 2, use the higher 1 - then weight @ 50%

("Past Ratings")

If 7, average the highest 4 - then weight @ 1 - "Recent Ratings" weight
If 5 or 6, average the highest 3 - then weight @ 1 - "Recent Ratings" weight
If 3 or 4, average the highest 2 - then weight @ 1 - "Recent Ratings" weight
If 1 or 2, use the higher 1- then weight @ 1 - "Recent Ratings" weight
If 0, use 0 and the horse will not get a rating

PAST RATINGS ONLY CASE: When 0 "Recent Ratings" exist, weight @ 2.5% and use the "Past Ratings" as follows:

If 8, use the most recent "Past Rating" (weight @%), average the highest 4 (from the 7 "Past Ratings" left) & weight @(1-recent "Past Rating" weight). The final number is weighted at (1-"Recent Ratings" weight)
If 7 or 6,use the most recent "Past Rating" (weight @%), average the highest 3 (from the other 6 or 5 "Past Ratings" left) & weight @(1-recent "Past Rating" weight). The final number is weighted at (1-"Recent Ratings" weight)
If 5 or 4, use the most recent "Past Rating" (weight @%), average the highest 2 (from the 4 or 3 "Past Ratings" left) & weight @(1-recent "Past Rating" weight). The final number is weighted at (1-"Recent Ratings" weight)
If 3 or 2, use the most recent "Past Rating" (weight @%), average the highest 1 (from the 2 or 1 "Past Ratings" left) & weight @(1-recent "Past Rating" weight). The final number is weighted at (1-"Recent Ratings" weight)

* The weight given to the most recent "Past Rating" depends on a special formula

* Speed ratings for races where the horse was < 4 years old are "age adjusted" using a special formula

NOTE: Horse rating reports are updated daily at 5:00 AM PT