McCarthy (shoulder) was Tuesday.

McCarthy suffered a shoulder injury during the Titans' preseason opener and has already undergone surgery to repair the ailment. Nonetheless, given the severity of the procedure, McCarthy has already been ruled out for the season and Tuesday's placement on injured reserve confirms that status.

McCarthy (shoulder) is expected to go on injured reserve in the near future, The Tennessean reports.

McCarthy underwent shoulder surgery on Friday and has already been ruled out for the remainder of this season, so it's no surprise he's expected to land on IR shortly. In wake of his injury, the Titans signed linebacker Kendrick Adams to work with the team's reserve units.

McCarthy (shoulder) underwent surgery on Friday and will miss the remainder of the season, Jim Wyatt of the Tennessean reports.

McCarthy, a fourth-round pick in 2011, picked up the injury in last Saturday's preseason opener against Green Bay. Fellow linebacker Kendrick Adams was added to Tennessee's roster on Wednesday to replace McCarthy, who had been practicing with the second- and third-team defenses during training camp.

McCarthy will meet with Dr. James Andrews next Monday to determine if surgery is necessary on his shoulder, ESPN.com's Paul Kuharsky reports.

McCarthy attained the injury in Saturday's preseason opener against the Packers, with coach Ken Whisenhunt calling the ailment a "significant" one. Even if McCarthy receives a good prognosis from Dr. Andrews, there's still a good chance he won't be ready for the start of the regular season, making him a potential PUP list candidate.

McCarthy will be out indefinitely after suffering a shoulder injury against the Packers on Saturday, the Tennessean reports.

Coach Ken Whisenhunt called the injury that McCarthy suffered in the third quarter Saturday a "significant" one, which clearly represents a big hit to McCarthy's chances of cementing a key inside linebacker role with the Titans out of the gate.

McCarthy was forced out of Saturday's preseason game against Green Bay with a shoulder injury.

No word yet on the severity of the injury, but this doesn't bode well for McCarthy, who was already facing an uphill battle for playing time at linebacker for the Titans.

Titans coach Mike Munchak expects Colin McCarthy to be limited to a reserve linebacker role and special teams this season.

McCarthy was a starter and team captain in 2012, but fell behind Moise Fokou in training camp due to a hamstring injury. "He has to work his way back to where we feel he can do all the things he needs to do on an everyday basis," Munchak said. "Right now he is not where he needs to be to be an every down guy." The Titans have "no plans" to replace Fokou any time soon. Even when he gets fully healthy, McCarthy isn't expected to regain his starting job.

Titans LB Colin McCarthy (hamstring) returned to practice Thursday.

Coach Mike Munchak confirmed Sunday that Moise Fokou has won the Titans' starting middle linebacker job over Colin McCarthy.

On McCarthy's only practice of training camp, he pulled his hamstring. He has not returned, while Fokou has handled starting reps since OTAs. "I don't know what's gonna go on with Colin," Munchak said. "Right now, (Fokou) would be our starter. I don't know if Colin will be practicing this week, and next week. ... (Fokou) is the best linebacker that's lined up and practiced everyday."

Titans MLB Colin McCarthy (hamstring) is expected to miss at least on more week.

The oft-injured McCarthy is doing himself no favors on the training table. Moise Fokou started at middle linebacker in the Titans' preseason opener against the Redskins and played well. However, head coach Mike Munchak said McCarthy remains very much a contender to win the job. Trust McCarthy in IDP leagues at your own peril.

Titans MLB Colin McCarthy will miss Tennessee's preseason opener with a hamstring injury.

McCarthy has been plagued by injuries dating back deep into last season. The Titans expect him to return "in a week," but this will get Moise Fokou back running with the first-team defense. McCarthy's IDP reliability is very shaky.

Titans MLB Colin McCarthy has resumed practicing with the first-team defense.

Coming off an injury-plagued 2012, it took McCarthy a week to overcome journeyman Moise Fokou. "He's done well I think toward these last four or five days of OTAs and the mini-camp," coach Mike Munchak said. "He just looks physical. He looks bigger, stronger, confident again, just how he was last year at this time."

The Titans consider MLB Colin McCarthy 100 percent recovered from last year's ankle injuries and concussion entering camp.

"He's healthy. He looks good," coach Mike Munchak said. "There are no concerns there as far as us having to limit him in any way." McCarthy is tentatively expected to hold off journeyman Moise Fokou for the starting middle linebacker spot.

The Nashville Tennessean believes the Titans' middle linebacker job is Colin McCarthy's to lose.

McCarthy ran with the second-team defense this spring, behind free-agent pickup Moise Fokou. The Titans were just trying to ease McCarthy back in, after he admitted he was slow to recover from last season's concussion and ankle injury. There's no reason why McCarthy shouldn't win the job if healthy.

Titans MLB Colin McCarthy is now working behind Moise Fokou at OTAs.

Fokou took first-team reps during Friday's practice, while McCarthy ran with the twos. This impending training camp battle is far from settled, but it's a reminder that McCarthy lacks job security after struggling throughout 2012.

Titans MLB Colin McCarthy (ankle) says he is at about "80 percent."

McCarthy's 2012 season was marred by a Week 1 ankle injury and a Week 12 concussion. It resulted in him only playing seven games and registering 38 tackles. He expects to be 100 percent for training camp. McCarthy won't be handed the starting job, but there's no reason why he shouldn't win it if healthy.

Titans MLB Colin McCarthy underwent ankle surgery earlier this offseason.

Titans placed MLB Colin McCarthy on injured reserve with a concussion, ending his season.

FB Collin Mooney has been promoted from the practice squad in a corresponding roster move. Plagued by a concussion since Week 12 and a high-ankle sprain before that, McCarthy will finish 2012 with just seven appearances and 388 snaps to his name. When he was on the field, he was one of the worst middle linebackers in the league, failing to hold his own against the run. McCarthy was much better during his rookie season in 2011, however, and should have the inside track on remaining the Titans' middle linebacker heading into 2013.

Titans MLB Colin McCarthy (concussion) has been ruled out for Week 17 versus the Jaguars.

McCarthy's 2012 season was marred by a high-ankle sprain suffered in Week 1, and then by a Week 12 concussion. He played in just seven games, recording 38 tackles and one interception. McCarthy will be an IDP to monitor for the 2013 campaign.

Titans MLB Colin McCarthy (concussion) is expected to return for Sunday's game against the Packers.