Packers HC Mike McCarthy Presser 8/24: JC Tretter has "significant" knee injury

Meeting the media for the first time since his team's 31-21 victory over Oakland, Packers head coach Mike McCarthy announce injuries for B.J. Raji, Brad Jones, and JC Tretter.

• McCarthy opened the press conference with some injury news. In addition to the expected announcement that nose tackle B.J. Raji will have surgery on his torn bicep, McCarthy revealed that linebacker Brad Jones has a quad issue and center JC Tretter suffered a "significant" knee injury that will keep him out multiple weeks. "JC was injured on the first series. Played 49 snaps, and once the No. 1s went out, it started bothering him." He added, "There's more testing that will go on with Tretter. We don't have all the answers yet."
• Expanding on Raji's injury, McCarthy said that the defensive lineman is not a candidate for the IR-return designation.
• McCarthy expressed confidence in backup center Corey Linsley. "He took all the snaps today. He's obviously a rookie, he needs the reps, but he'll be ready for Kansas City." McCarthy said the game plan wouldn't change with Linsley at center. He also mentioned that the guards are always trained to play center. Both Josh Sitton and T.J. Lang took reps there at practice today.
• It sounds like Josh Boyd will get the first shot at replacing Raji at nose tackle. "I wouldn't classify Josh as an end," McCarthy stated. "He can play three-technique and has done well at nose."

That's all for McCarthy. Keep you internet machines tuned to Acme Packing Company for the latest Packers news and developments.