Total QBR: Manning is dominant

A look at the AFC West Total QBR leaders through Week 8:

1. Peyton Manning, Denver

Total QBR: 82.5

NFL rank: 1

Comment: Manning’s QBR keeps getting higher and higher.

2. Carson Palmer, Oakland

Total QBR: 51.9

NFL rank: 22

Comment: Palmer has been efficient and the wins are coming together. That’s what is important.

3. Matt Cassel, Kansas City

Total QBR: 41.7

NFL rank: 28

Comment: Cassel has another chance with Brady Quinn out with a head injury.

4. Philip Rivers, San Diego

Total QBR: 36.7

NFL rank: 31

Comment: Rivers’ play has plummeted during a three-game losing streak.