Last season, the Eagles offensive line went through five different right tackles due to Lane Johnson's 10 game suspension.  

His absence caused the line to have issues throughout the season, coupled with Brandon Brooks missing time, while dealing with anxiety issues, all of those factors led to inconsistent play and Carson Wentz being sacked 33 times last season.

They had a hard time keeping their linemen on the field, as injuries to Halapoulivaati Vaitai, Allen Barbre, Matt Tobin and losing Brooks tested the Eagles’ depth.

Veteran Stefan Wisniewski and rookies Isaac Seumalo and Vaitai saw more playing time as a result. The later two gained valuable playing time and experience during the rookie seasons.

But the biggest loss was Johnson. With Johnson on the field the Eagles were 5-1, without him just 2-8

Getting Johnson back, along with having continuity with the same five guys back in the starting lineup, Pro Football Focus ranked Philadelphia's offensive line as the best in the NFL.

Out of all the offensive lines in the NFL, the Eagles currently have the fewest holes. Their biggest question mark heading into 2017 is center Jason Kelce, who is a former PFF All-Pro (2013) in his own right. They also have dominant players like Lane Johnson, who was the best right tackle in the NFL a season ago when on the field.

PFF lists the Eagles starting offensive line as:

LT: Jason Peters
LG: Allen Barbre
C: Jason Kelce
RG: Brandon Brooks
RT: Lane Johnson

Peters’ has been consistently one of the top left tackles in football, while he may have slowed down slightly in 2016, he is still in the top half of the league at his position.

While PFF has Barbre listed at left guard, it could be any one of three viable candidates. In addition to Barbre, Seumalo and former No. 10 overall pick Chance Warmack will battle at training camp, but add tremendous depth to the unit.  Seumalo also had a chance to get some playing time last year, though some thing his future will be at the center position.

Even if Barbre is supplanted as the starter, the other four players from last year's line are all set to reprise their roles.

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