Parry’s Power Guide was created in 1979 by Noland Parry. It was first published in 1980.
Published in Gaming Today for over 35 years!
The purpose of the guide is to show the strength of a team in relation to other teams in the league. Each teams rating consists of two factors; an offensive rating and a defensive rating. The offensive rating is based on final score and the defensive rating is based on strength of schedule. The combination of these two ratings establishes a power rating for that team. When you compare the ratings of the two teams that play each other, you can determine who is favored by how many points.
The ratings are updated weekly, by computer, based on a formula created by Noland Parry.