Posted by ESPN.com's Bill Williamson
Here is a look at the AFC West leaders in a few categories after Week 4:
Jay Cutler, Denver Broncos
The numbers: He has thrown for 1,275 yards.
What does it mean? Cutler is ranked second in the NFL in passing yards and he was named the AFC offensive player of the month for September for his outstanding start.
Larry Johnson, Kansas City Chiefs
The numbers: He has rushed for 415 yards.
What does it mean? Johnson is seven yards from leading the NFL in rushing and is the leader in the AFC. After expressing concerns about his role in Kansas City, Johnson has run for more than 300 yards the past two weeks and has shown he is still a major threat.
Brandon Marshall, Denver Broncos
The numbers: He has 31 receptions.
What does it mean? Marshall is tied for the NFL lead in catches despite missing the first game of the season due to an NFL suspension.
D.J. Williams, Denver Broncos
The numbers: He has 34 tackles.
What does it mean? The weak side linebacker has been one of Denver's few bright spots on defense this season.
Kalimba Edwards, Oakland Raiders; Jyles Tucker, San Diego Chargers
The numbers: Edwards and Tucker each have three sacks.
What does it mean? Edwards and Tucker may be lesser-known names but they are making a big impact for their respective teams.
The numbers: Cromartie and Hall each have two interceptions.
What does it mean? Both Cromartie and Hall have reputations as playmakers and they have started off well.