#1
Excellent Stability / Excellent Health
Starters: Anthony Castonzo (LT), Quenton Nelson (LG), Ryan Kelly (C), Mark Glowinski (RG), Braden Smith (RT)

Injuries: Javon Patterson (knee)

Backups: (T): Le'Raven Clark (G): Danny Pinter (C): Javon Patterson

Fantasy Impact: Phillip Rivers' arrival in Indianapolis will finally gift him the luxury of an elite offensive line. Rivers, who is now entering his age-39 season, never boasted mobility as one of his top traits, but standouts Quenton Nelson, Branden Smith and Anthony Castonzo should provide more than enough stability to keep him consistently outright. The Colts' unit has a tremendous floor and a ceiling of being the team's top protective front, and returning all five starters for 2020 should serve to minimize any early-season hiccups.

Trending: Steady

#2
Excellent Stability / Excellent Health
Starters: Terron Armstead (LT), Andrus Peat (LG), Erik McCoy (C), Cesar Ruiz (RG), Ryan Ramczyk (RT)

Injuries: James Hurst (suspension)

Backups: (T): Ethan Greenidge, Derrick Kelly (G): Nick Easton, Will Clapp (C): Nick Easton, Will Clapp

Fantasy Impact: Boasting what's arguably the best tackle duo in the league - Terron Armstead and Ryan Ramczyk - the Saints could probably get away with substandard play on the interior line. However, they've instead been gifted with solid starters all around, with 2019 second-round pick Erik McCoy proving to be a reliable starting center during his rookie season. LG Andrus Peat re-signed long term, positioning the team to return four of five starters along the O-line. First-round rookie Cesar Ruiz enters the season as the only question mark among what was one of the few elite groups in the league last year.

Trending: Up

#3
Good Stability / Good Health
Starters: Tyron Smith (LT), Connor Williams (LG), Joe Looney (C), Zack Martin (RG), La'el Collins (RT)

Injuries: Connor Williams (knee)

Backups: (T): Mitch Hyatt (G): Brandon Knight, Connor McGovern (C): Tyler Bladasz, Adam Redmond

Fantasy Impact: The Cowboys tried to avoid attrition to the offensive front, but their plan was ruined when star center Travis Frederick decided to retire. The team still has a trio of standout blockers in Tyron Smith, Zack Martin and La'El Collins, but the center and left guard spots appear far less stable, especially with 2018 second-round pick Connor Williams coming off a torn ACL he suffered last Thanksgiving. Of course, if the front were to miss the "elite" mark as a result of scrambling to replace Frederick, the Cowboys' offense would once again stand to benefit from a significant advantage (at least) in terms of protection and blocking.

Trending: Steady

#4
Excellent Stability / Excellent Health
Starters: Ronnie Stanley (LT), Bradley Bozeman (LG), Matt Skura (C), D.J. Fluker (RG), Orlando Brown (RT)

Injuries: Matt Skura (knee) PUP, Andre Smith (opt out)

Backups: (T): Tyre Phillips, Will Holden (G): Ben Powers, Parker Ehinger (C): Patrick Mekari

Fantasy Impact: Though it's true that a quarterback with elite mobility and elusiveness makes the O-line's job drastically easier, Baltimore's group boasts reliable pass- and run-blocking skills by any measure. Replacing long-time standout Marshal Yanda is a tall task, and though a competent RG could emerge from the combination of D.J. Fulker, Ben Powers and Ben Bredeson, the position stands to see at least a slight downgrade. The presence of Ronnie Stanley, one of the best LTs in the league, and an above-average starter in Orlando Brown Jr. bookending the right side, will serve to further ease that transition.

Trending: Down

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