no, haven't even looked at that as yet. my systems are based around busting many myths including days break between runs etc. after years of thinging Api was nonsense, i now have a belief that it's worthwhile as a base to find the classier horses in a race. i try hard to make sure each filter fits hand in glove with the other filters, and is logical too. price is a good filter. i recall a post on here where the late geoff murphy won punting his horses but only when they were 4 / 1 or better. he said his strike rate meant he could lose punting that way. whether that's a true story i dont know but it's on this site somewhere.

a good horse, a good jockey, a good bet ..... and better than 4 / 1 should be a good filter.