Although the failings of quarterback J.T. Barrett and the Ohio State offense continue to be the focus for many fans after the loss Saturday to Oklahoma, the Buckeyes defense knows it took one on the chin as well.

Defensive coordinator Greg Schiano said as much after the game. But on Tuesday, he said correcting some of the things that went wrong will have to wait. This week, there’s a totally different challenge coming to town.

Army, with its triple-option, pass-only-as-a-surprise-or-when-desperate offense, will invade Ohio Stadium for the first time.

“I’ve kind of moved forward now and we’re dealing with Army,” Schiano said. “It’s a very unique set of challenges when you play a triple-option football team. It’s purely discipline, assignment football, and then you have to physically do your job once you do your assignment. If one piece is out of place, it’s a potential big play.”

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Sometimes pieces were out of place on several big plays that Oklahoma quarterback Baker Mayfield orchestrated in the second half when he rallied the Sooners from 10-3 and 13-10 deficits to win 31-16. That’s the theme coach Urban Meyer has stressed.

“It’s a very similar message that’s program-wide right now, that we’re not playing on all cylinders,” Meyer said. “I think we’re playing hard; we’re not playing necessarily smart. (Defensively) we turned some guys loose in coverage last week. And some guys are stepping outside the defense and not doing exactly what they’re taught to do.

“But this is a very different week. It’s very hard to work on your base fundamentals because this is such a unique offense. Every waking moment is going to be spent on preparing for (Army’s offense). But throughout the next several weeks it will be all about getting better and improving, and doing exactly what you’re coached to do.”

Against Army, which not only runs the option but straight power plays, inside and outside counters, discipline will be at a premium for Ohio State’s defense.

Quarterback Ahmad Bradshaw is astute at manipulating the offense, making reads, occasionally making a big run himself, and on rare occasion stepping back and trying to hit a big pass.

“They rarely have any mental errors, and that’s the thing: We have to out-discipline them,” said end Tyquan Lewis of the defense, which is prepping by working against a scout team offense run by shifty quarterback Tate Martell and others. "They do the same thing over and over.”

So when it comes to the crash against Oklahoma, the forensics analysis is on hold. Ohio State fans may remember the defense’s struggles against Navy’s triple-option offense in the opener of the 2014 national championship season.

“It’s such a different animal moving forward. We’ll deal more with regular football corrections a week from now … when we get done with the Army game,” Schiano said. “We’ll get back to playing regular football (against Nevada-Las Vegas next week).

“This is a totally different thing. People say, ‘Oh, it’s an option.’ But it’s totally different, not like anything else we see all year. So when we make the corrections (of what went wrong against Oklahoma), it will be next Sunday.”