If you are looking for a system that uses just the previous winning positions form figures EG 3521/75 etc I don't think such a system would work anymore. Way back in the 80's there was a very good system by a guy called Clive Holt that was based on form figures but the market adjusted, technology moved on and it is no longer profitable For such an approach to work today it would need other factors to narrow down selections. The Fineform method mentioned above just looked for wins in the last two races and a CD or C & D by the name indicating that it had won over the course and distance. Such a system is way to simple for today's sophisticated betting market.