The Calgary Stampeders have the best record in the CFL and they also hold down top spot in the Canadian Football League’s power rankings.

The Stamps solidified their grip on top spot with a 56-15 thumping of the Edmonton Eskimos in Week 7, a result which drops the Esks from fourth position to seventh. The rest of the top half of the rankings remain unchanged with Montreal at No. 2 and Winnipeg at No. 3.

Here is the CFL’s explanation of the power rankings:

The 2010 CFL Power Rankings is an objective measurement of each clubs’ performances relative to each other.

The model used for the 2010 rankings are based on information gathered from the 2009 season. This information suggested that the four most statistically significant indicators of team success were the Quarterback Efficiency Rating, the number of Rushing Yards, the number of Field Goals Missed and the number of Sacks Taken.

To measure the effects of these four variables on a club’s performance, a regression analysis was run which determined that each increase in one point of the quarterback efficiency rating increased a club’s score by .233 points. Each rushing yard gained increased a club’s score by .044 points. Each field goal missed decreased a Club’s score by 2.8 points and each sack taken decreased a club’s score by .73 points.
 
The equation may be written as follows:  3.9659 + (QB Rating x .233) + (Rushing Yards x .044) – (Field Goals Missed x 2.8) – (Sacks Taken x .73).
 
For 2010, a club’s “power” will be measured each week using this equation twice: Once for its offensive score, and then subtracting the results of the equation for its opponent, for its defensive score.
 
Power Rankings will be weighted based on the following formula: The immediately prior week’s results will be weighted 25%, and cumulative results will be weighted at 75% (except for the first week, which is based on 2009’s final standings).