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Auburn linebacker Cassanova McKinzy tackles Louisiana Tech wide receiver Carlos Henderson at Jordan-Hare Stadium in Auburn, Ala., Saturday, Sept. 27, 2014. (Mark Almond/ malmond@al.com)

AUBURN, Alabama -- Auburn will enter LSU week with the status of its top two linebackers in doubt.

Cassanova McKinzy and Kris Frost are both day-to-day after suffering injuries against Louisiana Tech, according to defensive coordinator Ellis Johnson.

McKinzy suffered a concussion, and Frost injured his left knee as he tried to block for Montravius Adams on Adams' interception return.

"They are kind of day-to-day," Johnson said. "Cass actually got kicked in the chin and that caused a little mild concussion. He seemed pretty good today. We don't do much on Sundays, but he didn't practice."

McKinzy did not leave the sideline on Saturday after the injury.

McKinzy's concussion will be monitored closely by Auburn team doctor Michael Goodlett, who is among the leaders in concussion policy and treats concussions very conservatively.

Frost went into the locker room for an evaluation and came back onto the field in full uniform, but he did not re-enter the game.

Auburn's starting weak-side linebacker was back on the practice

"Frost was moving around a little bit," Johnson said. "He got fallen on. On the interception a guy fell on his leg."

The reason for the injuries -- Montravius Adams also briefly left the game -- had to do with Louisiana Tech's blocking technique.

"They did a lot of cut blocking and most of it was legal, but there were a few that were not seen and not called," Johnson said. "It was a lot of that, a lot of ankles and stuff."

With both linebackers injured, Anthony Swain, freshman Tre' Williams and JaViere Mitchell filled the role. Swain can handle both roles, Williams plays the weak side and Mitchell entered the game as the Dime linebacker.

Auburn's defense has a few nagging injuries to get healthy over the next 48 hours.

"We've got a bunch of them. Another one has a bruised shin. We've got a bruised bone. Swain has a very mild sprain," Johnson said. "Just banged up. We need these 48 hours for sure."