AFC West has good QBR week

Let’s look at how the AFC West’s four starting quarterbacks rated in ESPN Stats & Information’s Total QBR after Week 4:

Jason Campbell, Oakland

Week 4 QBR: 43.7

Weekly NFL ranking: 16

Season QBR: 63.2

Season NFL ranking: 10

Comment: Campbell is most effective when the Raiders dominate on the ground.

Philip Rivers, San Diego

Week 4 QBR: 85.4

Weekly NFL ranking: 5

Season QBR: 60.9

Season NFL ranking: 13

Comment: Rivers is beginning to get comfortable.

Kyle Orton, Denver

Week 4 QBR: 77.9

Weekly NFL ranking: 9

Season QBR: 54.7

Season NFL ranking: 15

Comment: But can he lead Denver to wins?

Matt Cassel, Kansas City

Week 4 QBR: 68.1

Weekly NFL ranking: 11

Season QBR: 42.1

Season NFL ranking: 26

Comment: Cassel has improved steadily in the past two weeks.