QBR: Rivers has big week

A look at the Week 2 AFC West Total QBR leaders:

1. Philip Rivers, San Diego

Total QBR: 84.7

Weekly ranking: 5

Comment: Rivers is playing nearly flawlessly.

2. Matt Cassel, Kansas City

Total QBR: 42.3

Weekly ranking: 20

Comment: Lots of Cassel’s Week 2 success came in garbage time.

3. Carson Palmer, Oakland

Total QBR: 42.0

Weekly ranking: 21

Comment: Palmer has thrown for 670 yards in two games without much of an impact.

4. Peyton Manning, Denver

Total QBR: 21.3

Weekly ranking: 29

Comment: Manning bounced back, but throwing three interceptions in the first quarter is frowned upon.