Hi Guys,

Have not posted for a long time as i just got back from a long holiday to the USA. These Power Rankings are derived from one of my mathematical programs that is used to predict future encounters between teams based on past results. These ratings change with every result. The predicted margin is the difference between ratings of the 2 sides pitted against each other. Home Advantage is then taken into account which varies depending on the team and the ground. Last year the average HA was 6 or 7. This season so far it is less than 3. The current ratings for the first 8 weeks of the year are assuming an HA of 3 for every team and ground just to keep things simple. The predicted margins become prone to large error when high rated teams play low rated teams due to high leverage so the margins become quite inaccurate. The model works best on a head to head basis where probabilities are formulated according to the predicted margin. Will post week 9 predicted chances of each match up shortly.

Cheers
ATC