On this race form here - http://affiliate.sportsbet.com.au/form/Belmont_6.pdf

It says Silent Hero's last race was on the 04/06/2007... but, I know it has raced before that as I backed it to win on the 21st of this month:

21-06-2007 16:57

6604645

Single - Northam 8 - 3. Silent Hero - $10 Win - Country Best Price

Should I be finding new forms to study because the current ones I'm using could be incomplete?

Cheers
Bon