Pro Football Focus ranks all 32 team’s offensive line: Where did the Cowboys end up? The Dallas Cowboys are struggling on offense this season. If you look at the numbers Authentic Sean Lee Jersey , it’s a little discouraging.There are lot of different theories going around as to why this offense is playing so poorly. Most of it centers around the play of quarterback Dak Prescott. Our own Connor Livesay does a great job of breaking down his mechanics and how they are contributing to his sub-par play this season. Some of the criticism is directed at the play-calling, including comments made by Cowboys receiver Allen Hurns. Even the receivers themselves have been under fire to where Hurns and even Cole Beasley have felt compelled to defend the position group.While all these factors play a part in the poor play of the offense, another group also shoulders part of the blame - the offensive line. The Cowboys have invested quite a bit into their offensive line over the years with four players - Zack Martin ($14 M), Tyron Smith ($12.2 M), Travis Frederick ($9.4 M), and La’el Collins ($7.7 M) accounting for nearly one-quarter of the team’s salary cap resources. And let’s not forget they just used a second-round pick on rookie Connor Williams in April’s draft. Expectations are that this group performs at a high level or else they are mismanaging their financial resources.Unfortunately, life gave them some lemons when Travis Frederick was diagnosed with Guillain-Barre syndrome, an auto-immune disease that affects the nervous system. Frederick was placed on injured reserve last weekend, keeping him out for at least the next seven weeks.With Frederick out, backup center Joe Looney has been filling in and he’s been solid this season. Pro Football Focus recently ranked the offensive line of all 32 NFL teams so far this year. The top 10 are as follows:1. Los Angeles Rams2. Philadelphia Eagles3. New Orleans Saints4. Green Bay Packers5. San Francisco 49ers6. Detroit Lions7. Tennessee Titans8. Washington Redskins9. New England PatriotsAnd rounding out the top 10 are our beloved...This is a fair assessment of the Cowboys offensive line. Zack Martin has now emerged as the team’s best offensive linemen. Despite J.J. Watt notching a rare sack against him on Sunday night, those two exchanged blows all night with Zack winning his fare share of battles. Here, he gives J.J. a little nudge just to let him know he’s thinking about him.While Martin has been a model of consistency, the same cannot be said for the other remaining All-Pro lineman still suiting up for them. Tyron Smith has been good at times, but also shaky at times. He already has three penalties on the season with a hold, false start Youth Tyron Smith Jersey , and illegal block in the back. Speaking of penalties, La’el Collins is getting flagged almost every game. He already has been called for four holding penalties (two have been declined) as well as a false start. What is odd is that the interior line, with two new pieces, have shown more discipline that the veterans out on the edge. The only penalty the inside guys have comes from the rookie Williams.The Cowboys offensive line is not as dominant as they once were. That was never more evident when Jason Garrett opted to punt on fourth down in overtime against the Houston Texans. In past seasons, he wouldn’t have thought twice about running down the defenses throat with an offensive line that could impose it’s will on their opponents. Of course the offensive line is only a part of the Cowboys offensive woes, but they are definitely a part of it. A top 10 unit is still pretty good, but pretty good won’t cut it. They need to be outstanding. We know it’s in them because we’ve seen it. They played extremely really well against Detroit and the result was the team’s only 400+ offensive performance of the season. It’s going to be a challenge for this group with each new game, especially with some of the tough defensive fronts they’ll face this season. Defenses are really coming after Ezekiel Elliott. And they know that anytime they get pressure on Prescott, the Cowboys offense usually sputters. But if the Cowboys can survive and stay in the NFC East hunt, help should eventually be on the way. Frederick was asked by 105.3 The Fan about the decision to put him on IR and his outlook for when he might be able to return.If Frederick is ready when his eight weeks are up, then that puts him back on the field when the Cowboys host the Philadelphia Eagles. That’s a big game. It would sure be nice if the Cowboys had the better offensive line on that day. The season might depend on it. Travis Frederick will not go on injured reserve initially as he battles a condition that affects the nervous system, although the Dallas Cowboys still don't have a timetable for the return of their four-time Pro Bowl center.Coach Jason Garrett said Monday that Frederick hasn't had any "drastic setbacks" while getting treated for Guillain-Barre syndrome. The disorder attacks nerves and causes weakness in various parts of the body.Joe Looney is expected to start when the Cowboys open the season Sunday at Carolina.The 27-year-old Frederick traveled with the team to the final preseason game in Houston and is attending meetings. He has started all 83 games, including three playoff games, over five seasons. A move to IR would force Frederick to miss at least eight games."It's been positive since he started his treatments," Garrett said. "And that's given us cause to be optimistic. He's working out on his own. He's been able to handle the work so far. From my perspective http://www.cowboysauthorizedshops.com/authentic-demarcus-lawrence-jersey , the information that I've gotten, there hasn't been any drastic setbacks in any way."The Cowboys added depth on the interior line by claiming center Adam Redmond on waivers from Buffalo and acquiring Kansas City backup Parker Ehinger in a trade. Ehinger was a fourth-round pick two years ago.Dallas doesn't want to move four-time Pro Bowl right guard Zack Martin to center, but he is the emergency option. Martin injured a knee in the second preseason game against Cincinnati but says he will be ready to start against the Panthers.Frederick hasn't spoken to reporters since announcing his diagnosis almost two weeks ago."He reached out to me and said, 'Coach, would you mind if I came to Houston? I'd like to be part of the visit to NASA and I'd like to be part of the team when we play on Thursday night,'" Garrett said. "I said, 'Would I mind? Are you kidding me? I'd absolutely love to have you be a part of it.'"He's been very proactive and he's taken the initiative of being back and being part of our team and trying to be involved in everything that we do short of going out on the practice field."Frederick, Martin and left tackle Tyron Smith — all first-round picks and all Pro Bowlers each of the past four seasons — have anchored a line that the Cowboys hope can make them a run-first team with Ezekiel Elliott, the NFL rushing leader as a rookie in 2016.La'el Collins is going into his second year as the starter at right tackle, and rookie second-round pick Connor Williams is at left guard.NOTES: The Cowboys placed WR Noah Brown (hamstring) on IR and brought back WR Deonte Thompson in his place. Thompson was among the final cuts after signing as a free agent in the offseason, but Garrett said the Cowboys intended to bring him back. Thompson was slowed by an Achilles injury most of training camp. ... Rookie RB Bo Scarbrough of Alabama, a seventh-round pick, was signed to the practice squad. Custom Indianapolis Colts Jerseys