On the opening day of training camp in Green Bay, Packers head coach Mike McCarthy shed light into the various injuries and ailments keeping several players from seeing the practice field.

Here's the latest on the walking wounded in Titletown...

Defensive Lineman Mike Neal

Injury: Abdomen

ETA: "A couple weeks away"

Commentary: Neal was injured away from the Packers facilities since the time the offseason program ended in mid-June. Given his lengthy injury history, Neal's current injury can't be taken lightly, but if he comes back and suffers no setbacks, he shouldn't fall too far behind the curve. He doesn't seem to be any more or less prone to injury whether he's bulked up near 300 lbs. or down around 280.

Cornerback Casey Hayward

Injury: Hamstring

ETA: "A couple weeks away"

Commentary: Like Neal, Hayward also sustained his injury while away from the team during the summer layoff. Assuming his injury doesn't get worse, Hayward should be fine for the regular season where he figures to play a prominent role in the Packers defense.

Offensive Lineman Derek Sherrod

Injury: Leg

ETA: Could be day to day

Commentary: The prognosis on Sherrod was more optimistic than expected. McCarthy said he was interested in getting the feedback from the training staff as early as tomorrow. Whether or not his return could be that early, however, is another matter. Still, McCarthy also added: "He's definitely much further along than he was when he was able to go through some of the drill work in the OTAs."

Running Back DuJuan Harris

Injury: Knee

ETA: "He may be a week or two"

Commentary: Apparently there's more going on than just recovering from the cyst that was removed from Harris' lung this offseason. A week or two won't be a big deal. That could put him on pace to return in time for the team's first preseason game.

Cornerback Davon House

Injury: Illness

ETA: Likely day to day

Commentary: Wes Hodkiewicz of the Green Bay Press-Gazette reports that House is suffering from a case of food poisoning. Nothing has been mentioned of his shoulder, which is even better news for the Packers defensive back. Sounds like he should be back in no time.

Jamari Lattimore

Injury: Illness

ETA: Likely day to day

Commentary: Unlike House, Lattimore was placed on the team's non-football illness list, which could indicate he's further away from returning to action, but that's merely speculation. It's probably not serious, but his situation is still largely unknown.

Safety Sean Richardson

Injury: Neck

ETA: Unknown

Commentary: Richardson's injury is being handled more delicately than most because of its serious nature. He underwent spinal-fusion surgery and the team is still trying to decide whether it's safe for him to play football. "There were some tests that had to be done in the last couple days," said McCarthy. "We're gathering information. Hopefully, we're getting close to a decision with Sean." The Packers could be forced to release the young safety, but no final determination has yet to be made.

Defensive Lineman Jerel Worthy

Injury: Knee

ETA: Unknown

Commentary: Worthy was placed on the active/Physically Unable to Perform list with no end in sight. He tore his ACL and had surgery after the season. Worthy feels like he'll be able to return this season, but no one but him is going out on a limb to say that will be the case.

Offensive Lineman J.C. Tretter

Injury: Ankle

ETA: During the regular season at the earliest

Commentary: After breaking his ankle and tearing ligaments in his ankle during Organized Team Activities in May, the fourth round draft choice won't be ready anytime soon. "I definitely know he won't be ready for the season," said McCarthy. "As far as what point in the season, that hasn't been expressed."