PFF's Mike Renner breaks down the PFF rankings for all 32 offensive line units as they stand, heading into the 2017 season.
The Rams signed Barwin this offseason, reuniting him with his former coach from his Texans days.
Daniel Kelley recaps the biggest pieces of news to know from Friday, including a big-name receiver working with an even bigger name.
The former Temple standout should see the bulk of snaps as one of Arizona's two inside linebackers in their 3-4 defense.
Sam Monson recaps the key pieces of news from Thursday, including a huge contract for Derek Carr and tracking dropped interceptions.
Walker has spent time with New Orleans and Detroit before being signed by the Rams earlier this March.
San Francisco has a position battle at tight end, and rookie fifth-rounder George Kittle appears to be the favorite for a job.
Gurley regressed in 2016 as he saw a big decline in his overall grade after a great rookie year in 2015.
The rookie out of Eastern Washington was an upper-level pass-rusher in college and should contribute early to the Rams defense.
CB Trumaine Johnson has been a consistent presence for the Rams the last two years. PFF looks at his production over that time.
San Francisco's changes over the offseason could mean Arik Armstead doesn't see as much time on passing downs.
Defensive lineman DeForest Buckner was an iron man for the 49ers last year. PFF looks at his production, including his impressive snap count.
Unlock all PFF content, including NFL player grades as reviewed by
© 2017 ProFootballFocus.com All rights reserved.