EARTH CITY, Mo. -- With a nudge from @Amazing_Jagman, I've updated rosters to produce age rankings for every team in the NFL. I'll begin with a look at where NFC West teams rank by position and overall.
QB: All four teams rank in the youngest third or so. The San Francisco 49ers have the most experienced starter in the division, but also the youngest group overall.
RB: I was a little surprised to see Seattle (third-oldest) and San Francisco (fifth-oldest) rank among the five oldest at this position, with St. Louis considerably younger on average. The Seahawks' Leon Washington turns 30 next month. Teammate Michael Robinson turns 30 in February. The 49ers added 32-year-old veteran special-teamer Rock Cartwright, who counts as a fullback, and veteran halfback Brandon Jacobs, 30. Frank Gore turned 29 in May. The St. Louis Rams, despite Steven Jackson (29) and fullback Ovie Mughelli (32), have quite a few young players at the position.
WR: Randy Moss, 35, contributed to the 49ers fielding the 10th-oldest group of receivers on average as training camps were beginning. For Seattle, the newly signed Antonio Bryant, 31, contributed to a No 13 ranking. The Rams have youth, youth and more youth at the position.
TE: Arizona ranks seventh-oldest at the position thanks to the presence of veterans such as Todd Heap, 32, and Jeff King, 29. But the team is most excited about second-year tight end Rob Housler. Seven of the Rams' eight tight ends are between 22 and 25 years old, helping St. Louis rank 30th in average age at the position.
OL: The Cardinals have previously ranked No. 1 in average age at this position. They've dropped to seventh after addressing the position in the draft at the expense of a few veterans. Adding 34-year-old veteran Russ Hochstein upped the average, however.
DL: The Cardinals have the oldest defensive linemen by average age. Darnell Dockett turned 31 this offseason. Vonnie Holliday is 36. Nick Eason is 32. Arizona has promising younger players at the position, notably nose tackle Dan Williams and defensive end Calais Campbell. But the group could use a youth infusion in the not-too-distant future. The Rams, meanwhile, got much younger by parting with James Hall, Fred Robbins and Justin Bannan. Chris Long, 27, is now the oldest defensive lineman on the team.
LB: The Cardinals' Clark Haggans, 35, and Paris Lenon, 34, help give Arizona the ninth-oldest linebackers in the NFL. The Rams' No. 14 ranking reflects their decision to add veterans on the outside. The team needs to address that position in upcoming drafts, it appears.
DB: The division features ample young talent in its secondaries. The Cardinals, despite fielding the oldest secondary in the division, have one of the most promising young cornerbacks in the NFL, Patrick Peterson. Seattle has the youngest secondary in the division. Three of four starters achieved Pro Bowl status last season. That's a great combination. The fourth starter, Richard Sherman, was arguably deserving of Pro Bowl honors as a rookie.
ST: The Cardinals continue to field the oldest specialists in the NFL on average. The Rams field the youngest group after parting with Donnie Jones and Josh Brown. I'm interested in seeing how the Rams' decision plays out.
Total: The Cardinals have some exciting young players, but their roster is third-oldest in the NFL. The team cannot realistically cite youth for any shortcomings this season. The Rams remain the youngest team -- slightly younger than Carolina -- despite adding Mughelli on Saturday. Seattle ranked among the youngest teams last season. Re-signing cornerback Marcus Trufant and adding Bryant, both 31, upped the Seahawks' average age. Unrestricted free-agent additions Deuce Lutui and Barrett Ruud are 29. The team now ranks 20th oldest in the NFL.
I'll pass along updated rosters once I've finished updating a few other categories. The chart shows age rankings by position group and overall for NFC West teams.