Hi Karla,

I designed the program myself as a way of rating teams within a biased schedule. Obviously it is unfair to look at simple win loss ratios for each team at a given time when comparing them because teams play teams of different strengths. An example of this is say Oakland who have won 0 from 3 but have been beaten in close games by 3 reasonably good teams. My program allows for this uneveness in the draw and rates teams according to the strength of their opposition based on the score differential and the Home field advantage. It becomes an accurate predictor as the season progresses.
It is possible to add more factors but at this stage im keeping it simple to only take into account final scores and home field advantage. Assumptions being made are - 1) that a teams strength is constant throughout the season
2) Home field advantage is the same everywhere for every team 3) A scoreline of 10-6 is the same as 38-34 and 4) A teams performance is measured on their winning margin. Obviously a lot of these assumptions are not true.

Cheers
ATC