Posted by ESPN.com's Mike Sando
Entering into a spreadsheet information for 256 NFL draft choices and roughly 350 undrafted free agents takes time. It's a little mind-numbing (OK, a lot mind-numbing).
Now that I've done it, the latest 26-category NFC West rosters feature relevant comparisons to league averages for age and other meaningful critieria, including college conference affiliations.
One other thing: The Cardinals' ranking for age on defense wasn't showing correctly in previous versions of this file. Arizona's offensive players are fifth-oldest in the league. Their defensive players are 10th-oldest. The defensive ranking was listed considerably lower in previous versions.
The Rams have gone from third-oldest to fourth-youngest. I'll have updated age averages for starters once teams set their lineups a little more definitively. It's a guessing game this early.
Update: I removed Khalil El-Amin from the Cardinals' roster. He failed a physical examination, so the team did not sign him.