The contrast is stunning and, depending on which team you are a fan of, must be either incredibly encouraging or darn right maddening.

That "contrast" is the dichotomy between teams whose offensive lines played well in Week 1 and those that did not, which, unfortunately seemed like a relatively high percentage. In fact, subpar offensive line play is one of the clear trends coming out of the opening weekend of the NFL season.

More specifically, the difference in how fans of teams like the Minnesota Vikings and New York Giants must feel right now is probably immeasurable.

Let's start with the Giants. While having Odell Beckham Jr. sit out Sunday night's game against the Cowboys certainly didn't help, the biggest reason by far for the Giants' ineptitude in the opening game of the year against a division rival was the performance of their offensive line.

The same offensive line that was the weakest unit on the team a year ago. As in, the same exact five guys in the same positions as a year ago.

It was essentially Groundhog Day for Giants fans and, perhaps more discouragingly, there is no real end in sight or hope on the horizon in terms of performance. The Giants have three below-average linemen in left tackle Ereck Flowers, right guard John Jerry and right tackle Bobby Hart. Those three were the biggest reason an undermanned Cowboys defense looked like the Steel Curtain or 1985 Bears reincarnated out there.

The Giants would tell you that it was a weak draft for offensive linemen. They'd also say that, as a result, veteran linemen like Matt Kalil and Riley Reiff got overpaid in free agency and that was simply not something they were willing to do. They opted for continuity and banked on the continued growth of young players like Flowers and Hart.

It doesn't appear to have worked.

What makes that all the more frustrating is when the Giants fans turned on the television the next night and watched Sam Bradford, Adam Thielen, Dalvin Cook, Stefon Diggs and pretty much any other Vikings skill player that touched the ball have all kinds of success against the Saints on Monday Night Football.

They were so good that Vikings head coach Mike Zimmer said they were "outstanding" after the game -- which is high praise after the frustration that he's shown with that unit the last couple of seasons.

Why should that have been an especially painful watch for Giants fans? Because the Vikings did all that behind an entirely revamped offensive line up front. The Vikings have only one returning starter on the line from last year, and even that guy, Joe Berger, is in a different position, playing right guard after starting at center a year ago.

That means the Vikings have five new guys at each position, and three of them weren't even on the team last year. That's rookie center Pat Elflein, right tackle Mike Remmers and the aforementioned Reiff.

That also means that the Giants have no excuse for their ineptitude. They could've gotten better. Or at least tried to.

They are far from the only offensive line that struggled in Week 1. Fans of teams like the Seahawks, Colts, Texans and Saints were probably jealous watching the Vikings on Monday night, but at least those teams either tried to get better this offseason or have legitimate reasons why the unit wasn't up to par.

The Colts are without their best lineman in injured center Ryan Kelly. Ditto for the Texans with holdout left tackle Duane Brown. The Saints not only were missing their left tackle in Terron Armstead but saw veteran right tackle Zach Strief go down with a knee injury during the game on Monday night.

And while it doesn't appear to be nearly enough and will likely be the unit that prevents the Seahawks from getting to the Super Bowl for the third year in a row, Seattle at least did something by signing former No. 2 overall pick Luke Joeckel and drafting Ethan Pocic out of LSU high in last April's draft.

Not the Giants. They stood pat and, because of that, Eli Manning will likely have a hard time standing tall in the pocket all season long.