CHARLOTTE, N.C.-- Carolina linebacker Thomas Davis has torn the anterior cruciate ligament in his right knee for the third time in less than 23 months.
The injury occurred during the third quarter of Sunday's 30-23 loss to Green Bay when Davis got his leg stuck in a pile of players.
It's another huge blow to Carolina's defense, which lost Jon Beason for the year with a torn Achilles in the season opener against Arizona.
Coach Ron Rivera says "it's disappointing news" for Davis, who was "playing really well."
Davis wrote on Twitter: "I would like 2 take the time and thank every1 that has supported me over my career."
Davis first tore his right ACL on Nov. 8, 2009 against New Orleans and again during the 2010 June minicamps.