Auburn offensive line coach Jeff Grimes has been scouring game film all week to find any deficiency he can in LSU’s defense.

He’s still looking.

“They are really good everywhere. I don’t see any weaknesses in their defense,” Grimes said. “I have been trying to find some and I haven’t found them.”

Even with its top defender — cornerback Tyrann Mathieu — and a capable 12th man — defensive back Tharold Simon — reportedly on the shelf Saturday, top-ranked LSU (7-0, 4-0 SEC) has more than enough defensive firepower to keep an opposing offense off-balance and off the scoreboard.

At the first level, tackles Michael Brockers and Bennie Logan form 593 pounds of double-team taking diversion, allowing Kendrick Adams and Sam Montgomery a rush off the edge.

The back end is overflowing with playmakers — even without Mathieu and Simon — with cornerback Morris Claiborne and his eight interceptions over the past two years, not to mention ballhawking safeties Brandon Taylor and Eric Reid.

“They have NFL players, multiple NFL players, at every level,” running backs coach Curtis Luper said. “First-round picks all over the defense. They can play the physical game and then they can play the finesse game.

“They can do it all well.”

Quite the test for a green quarterback to have to take in his first week as starter.

No. 20 Auburn (5-2, 3-1) is rolling with sophomore Clint Moseley, after he stepped in for junior Barrett Trotter at halftime last week and completed 4-of-7 passes for 90 yards in the second half of a 17-6 win over Florida.

It’s the moment Moseley’s been dreaming about his entire life, and it just so happens to be coming against the third-ranked defense in the FBS.

Beware of what dreams may come.

“It’s going to be tough,” Moseley said, “but I kind of almost wouldn’t want it any other way.”

Moseley is the third straight quarterback to start his first game of the year against the Tiger defense, after Florida’s Jacoby Brissett on Oct. 8 and Tennessee’s Matt Simms last week.

Brissett and Simms combined to go 14-of-34 for 222 yards, a touchdown and four interceptions against LSU.

The last Auburn quarterback to make his first career start on the road was Jeff Klein, who stepped in for an injured Ben Leard at No. 7 Tennessee on Oct. 2, 1999.

Klein’s first pass went for a pick-6 to the Volunteers’ Deon Grant, and Klein completed 15-of-29 passes for 147 yards and four picks in a 24-0 Tigers loss.

So history’s not exactly on Moseley’s side. Doesn’t matter to him.

“They’re probably going to be coming straight for me. I don’t think there’s any doubt about that,” Moseley said. “No starts, no experience, so they’re probably pumped up over there, excited. Yeah, it’s a little nerve-wracking, but at the same time, how could you draw it up better?

“It’s just the most dramatic situation you can think of. That’s what we play the game for.”

LSU’s turned its seemingly annual quarterback carousel into a plus this year, with Jarrett Lee (62.2 completion percentage, 1,085 yards, 11 TD, 1 INT) serving as the solid starter and Jordan Jefferson providing an effective change-of-pace option off the bench in his three games back after missing the first four due to suspension.

The Bayou Bengals are also the only team in the league that runs the ball more often than Auburn (45.6 times a game to 42.7) and even without leading rusher Spencer Ware — who is reportedly suspended for the game as well — the Tigers have capable backups in Michael Ford and Alfred Blue.

It’s one of the most balanced attacks in the SEC, and it should provide another challenge to an Auburn defense that has made tremendous strides over the past month.

“It’s just a pride thing,” defensive tackle Jeffrey Whitaker said. “We know they’ve got a good offensive line and they’re going to come off and they’re going to smashmouth. But the deal is we’re going to smashmouth as well.

“There’s no running away, there’s no hiding, there’s no intimidation. There’s no nervous, ‘I hope.’ It’s not one of those deals.”