quite right.

ref horses that win at 2 year old not having the same rating as a it would at 4 years old.

in my methods a horse that qualifies in listed or group company at 2 year old but has not qualified again by the time it is 4 years old in comparison of listed horses
wins 5 percent of races won by listed horses as against 33% by horses qualifying in the previous 8 weeks.

the deterioration faction is considerable.

please note these statistics is based on listed/group placed horses only.

the rating does not carry through the longer the period since its peak rating.

__________________
laurie