Sorry I forget to mention a couple of factors without giving it away

1. Not all days of the week. Saturday is included
2. Distance is a factor. 2000m+
3. Barrier 10 + I considered wide

1 winner from 48 starts I have on the database

But then again look at Nash racing on Saturdays nice October 2007

921 races, 184 winners (20%) with a 3.1%POT