Total QBR: Manning stays at No. 2

A look at the AFC West Total QBR season leaders through Week 12:

1. Peyton Manning, Denver

Total QBR: 79.5

NFL rank: 2

Comment: Manning’s numbers are dipping slightly.

2. Carson Palmer, Oakland

Total QBR: 42.5

NFL rank: 27

Comment: Palmer could do very little against his former team in Cincinnati.

3. Philip Rivers, San Diego

Total QBR: 41.1

NFL rank: 28

Comment: At some point, he’ll need some help.

4. Matt Cassel, Kansas City

Total QBR: 36.5

NFL rank: 31

Comment: New starter Brady Quinn hasn’t played enough to be ranked. It wouldn’t be very high, anyway.