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Arkansas quarterback Cole Kelley (15) is bottled up by the defense including LSU defensive end Frank Herron (97), LSU linebacker KÕLavon Chaisson (4) and LSU linebacker Devin White (40) for the stop on 4th down late in the second half of LSU's football game against Arkansas at Tiger Stadium Saturday Nov. 11, 2017, in Baton Rouge, La.. LSU got the ball on downs. LSU won 33-10.

Linebacker Donnie Alexander and edge rusher Arden Key missed practice Tuesday for a second consecutive day. 

Both defensive starters are recovering from injuries suffered in the win over Arkansas — Alexander his right shoulder or neck and Key his knee. Their status for the 21st-ranked Tigers' game at Tennessee on Saturday is very much in question. Coach Ed Orgeron called Key "questionable" for the game earlier this week. 

The All-American junior suffered what appeared to be a knee injury in the first quarter of the win over Arkansas, but he returned for the next two quarters. He did not finish the game, exiting with LSU up big with 10 minutes, 32 seconds left.

Trainers tended to and iced his knee on the sideline. The severity of the injury is unknown. After the game Saturday, Orgeron said "he should be fine."

Alexander suffered his injury in the second quarter.  Trainers examined his right shoulder or neck. He returned to the game. Alexander underwent shoulder surgery this spring to repair a torn rotator cuff.

Their replacements are true freshmen: Tyler Taylor at inside linebacker and K'Lavon Chaisson at LSU's edge-rushing position called Buck. 

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Other practice observations

  • CB Greedy Williams returned to drills after missing Monday's practice for undisclosed reasons. Edge rusher Sci Martin was also present at practice. Martin has been in and out of drills since the week of the the Alabama game. He had missed more than a month of practice before showing up two weeks ago. 
  • LT KJ Malone missed another practice. He's "very questionable" for this week's game against Tennessee, according to Orgeron. Malone injured his knee at Florida and has not practiced or played since. 
  • CB Kevin Toliver and guard Garrett Brumfield donned gold jerseys, signifying limited contact because of injury. In a new absence, RB Clyde Edwards-Helaire was not at practice during the media's limited viewing window. 

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Follow Ross Dellenger on Twitter, @RossDellenger.