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Lions Lose LB Damone Clark 'Indefinitely' to Injury

Detroit Lions head coach Dan Campbell announced that linebacker Damone Clark is out indefinitely due to a training camp injury. Meanwhile, safety Kerby Joseph remains away from the team while dealing with a personal issue, though Campbell says he is 'doing well.'

By Tertius News AI Desk 2 outlets · 3 articles Version 2 Coverage Aug 25, 2026 Published 21m ago

Injury Update: Clark Out Indefinitely

Detroit Lions head coach Dan Campbell delivered a sobering update on linebacker Damone Clark during his Tuesday press conference, announcing that Clark is "done indefinitely" due to an injury suffered early in training camp. Campbell noted that the injury occurred "two to three weeks ago" and is "significant enough" to sideline Clark for an extended period. The team has not disclosed specific details about the injury, and Clark has not practiced or participated in preseason games for the past couple of weeks.

Clark, who signed with the Lions in NFL free agency this past offseason, was brought in to serve as a backup linebacker and special teams contributor. He signed a one-year, $1.4 million contract in March and is currently listed as a third-team inside linebacker on the team's unofficial depth chart. Given the severity of the injury, Clark is now considered a candidate to start the season on injured reserve, according to the Detroit Free Press.

Joseph's Personal Issue and Recovery

In the same press conference, Campbell also addressed the status of safety Kerby Joseph, who remains away from the team while dealing with a personal issue. "Nothing new," Campbell said. "He's doing well." Joseph, who has been on the physically unable to perform list since early August, has not practiced this summer due to a degenerative knee condition that limited him to six games in 2025. Campbell said at the start of training camp that it was unlikely Joseph would be ready for the start of the regular season, and no definite timeline has been given for his return.

Joseph took part in intense workouts with trainers at the beginning of camp and expressed optimism about his recovery, but he has not attended practice since early August. Campbell confirmed that Joseph is not currently with the team but said, "He will be, though." Players who open the season on the PUP list must miss at least the first four games. The severity of Joseph's knee issue—described as a degenerative, chronic condition with swelling and cartilage damage—has led him to rely on strength programs and rehabilitation rather than surgery, according to reports.

Additional Injury Concerns

Campbell also noted that safety Thomas Harper is dealing with an ankle injury that could keep him out of the preseason finale against the Indianapolis Colts. The Lions have played two preseason games so far, against the Cincinnati Bengals and Washington Commanders, and their regular season opener is set for September 13. With Brian Branch also on the PUP list, Chuck Clark and Christian Izien are likely to step in at safety for the Lions.

How each outlet told it

Detroit Free Press as of Aug 25, 2026, 7:18 PM UTC

Framing: The headline lists the three injured players, signaling a broad update on multiple injuries. — Informative and neutral, with direct quotes from Campbell: 'Nothing new' and 'He will be, though.'

Facts Included:

Kerby Joseph remains away from the team due to a personal issue
Campbell said 'Nothing new' and 'He's doing well' on Tuesday, Aug. 25
Joseph has not practiced this summer due to degenerative knee condition
Joseph is on the PUP list and has not attended practice since early August due to personal issue
Joseph took part in intense workouts with trainers at start of camp and said he was 'super optimistic'
Campbell said at start of camp it was unlikely Joseph would be ready for start of season
Players on PUP list must miss at least the first four games
Campbell said Joseph is not currently with team but 'He will be, though'
Safety Thomas Harper has ankle injury that could keep him out of preseason finale against Colts
Veteran linebacker Damone Clark is done for preseason and out indefinitely with injury from early in training camp
Clark signed to be backup linebacker and special teams player
Clark is candidate to start season on injured reserve
Campbell said injury took place two to three weeks ago and is 'significant enough'

Read the source article →

Heavy. as of Aug 25, 2026, 6:17 PM UTC

Framing: The headline emphasizes the indefinite nature of Clark's injury, focusing on his unavailability for the season without specifying details of the injury. — Neutral and straightforward, with a direct quote from Campbell: 'He is done indefinitely.'

Facts Included:

Damone Clark signed with the Lions in NFL free agency this past offseason
Head coach Dan Campbell said Clark is 'done indefinitely' in a press conference early Tuesday afternoon
Clark hasn't practiced or participated in preseason games for the past couple weeks
The team has not disclosed details of the injury
In March, the Lions signed Clark to a 1-year, $1.4 million contract
Clark is listed as a third-team inside linebacker on the unofficial depth chart

Read the source article →

Heavy. as of Aug 25, 2026, 8:19 PM UTC

Framing: The headline emphasizes hope and a positive update on Joseph's knee, focusing on his recovery progress. — Hopeful and measured, with a focus on progress: 'He is doing well'.

Facts Included:

Kerby Joseph's knee injury limited him to six games in 2025
Campbell said Joseph is 'doing well' in recovery but still away from team training
No definite timeline for comeback has been given
Lions have played two preseason games against Bengals and Commanders
Regular season begins September 13
Joseph is on the PUP list and skipped training camp
Joseph has an undisclosed personal issue besides the knee injury
Joseph's knee condition is degenerative, chronic, with swelling and cartilage damage
He is relying on strength programs and rehabilitation instead of surgery
Brian Branch also on PUP list
Chuck Clark and Christian Izien are likely to step in at safety
Campbell has other notable options at safety

Read the source article →

What was claimed, and who backed it

Each row is one claim, attributed to the outlet whose wording states it most clearly. Confidence rates how directly the source text states the claim — explicit and unhedged rates high; hedged, pieced-together, or internally inconsistent statements rate lower. It does not measure whether the claim is true. Status counts the distinct outlets we found asserting it — so a single-source claim can still show high confidence, and a multi-source claim can show medium. Every one of those outlets is named beside the status, so you can check the count against the list. For claims extracted before we began storing that list, the row says so: it names the outlet the claim is quoted from and states that we have not recorded which outlets backed it. Outlets wrote at different times, so a figure that evolves — a casualty count, for example — can legitimately differ between rows; check the "as of" time next to each claim's source.

Claim	Confidence	Status
ClaimThe Detroit Lions signed Damone Clark in NFL free agency this past offseason.	ConfidenceHigh	StatusSingle-source via Heavy. as of Aug 25, 2026, 6:17 PM UTC
ClaimLions head coach Dan Campbell said Damone Clark is 'done indefinitely' in a press conference early Tuesday afternoon.	ConfidenceHigh	StatusMulti-source (2 outlets) via Heavy. as of Aug 25, 2026, 6:17 PM UTC, Detroit Free Press as of Aug 25, 2026, 7:18 PM UTC
ClaimDamone Clark hasn't practiced or participated in preseason games for the past couple weeks due to injury.	ConfidenceHigh	StatusSingle-source via Heavy. as of Aug 25, 2026, 6:17 PM UTC
ClaimThe Detroit Lions have not disclosed the details of Damone Clark's injury.	ConfidenceHigh	StatusSingle-source via Heavy. as of Aug 25, 2026, 6:17 PM UTC
ClaimIn March, the Lions signed Damone Clark to a 1-year, $1.4 million contract.	ConfidenceHigh	StatusSingle-source via Heavy. as of Aug 25, 2026, 6:17 PM UTC
ClaimDamone Clark is listed as a third-team inside linebacker on the Lions' unofficial depth chart.	ConfidenceHigh	StatusSingle-source via Heavy. as of Aug 25, 2026, 6:17 PM UTC
ClaimDamone Clark is a candidate to start the season on injured reserve.	ConfidenceMedium	StatusSingle-source via Detroit Free Press as of Aug 25, 2026, 7:18 PM UTC
ClaimDan Campbell said Damone Clark's injury occurred two to three weeks ago.	ConfidenceHigh	StatusSingle-source via Detroit Free Press as of Aug 25, 2026, 7:18 PM UTC
ClaimKerby Joseph's knee injury limited him to six games in 2025.	ConfidenceHigh	StatusSingle-source via Heavy. as of Aug 25, 2026, 8:19 PM UTC
ClaimDan Campbell said Kerby Joseph is 'doing well' in recovery but is still away from team training.	ConfidenceHigh	StatusMulti-source (2 outlets) via Heavy. as of Aug 25, 2026, 8:19 PM UTC, Detroit Free Press as of Aug 25, 2026, 7:18 PM UTC
ClaimNo definite timeline has been given for Kerby Joseph's comeback.	ConfidenceHigh	StatusSingle-source via Heavy. as of Aug 25, 2026, 8:19 PM UTC
ClaimThe Lions have played two preseason games against the Cincinnati Bengals and Washington Commanders.	ConfidenceHigh	StatusSingle-source via Heavy. as of Aug 25, 2026, 8:19 PM UTC
ClaimThe regular season begins on September 13.	ConfidenceHigh	StatusSingle-source via Heavy. as of Aug 25, 2026, 8:19 PM UTC
ClaimKerby Joseph is on the PUP list and skipped training camp.	ConfidenceHigh	StatusMulti-source (2 outlets) via Heavy. as of Aug 25, 2026, 8:19 PM UTC, Detroit Free Press as of Aug 25, 2026, 7:18 PM UTC
ClaimKerby Joseph has an undisclosed personal issue besides the knee injury.	ConfidenceHigh	StatusMulti-source (2 outlets) via Heavy. as of Aug 25, 2026, 8:19 PM UTC, Detroit Free Press as of Aug 25, 2026, 7:18 PM UTC
ClaimKerby Joseph's knee condition is degenerative, chronic, with swelling and cartilage damage.	ConfidenceHigh	StatusMulti-source (2 outlets) via Heavy. as of Aug 25, 2026, 8:19 PM UTC, Detroit Free Press as of Aug 25, 2026, 7:18 PM UTC
ClaimKerby Joseph is relying on strength programs and rehabilitation instead of surgery for his knee injury.	ConfidenceMedium	StatusSingle-source via Heavy. as of Aug 25, 2026, 8:19 PM UTC
ClaimBrian Branch is also on the PUP list.	ConfidenceHigh	StatusSingle-source via Heavy. as of Aug 25, 2026, 8:19 PM UTC
ClaimChuck Clark and Christian Izien are likely to step in at safety for the Lions.	ConfidenceMedium	StatusSingle-source via Heavy. as of Aug 25, 2026, 8:19 PM UTC
ClaimDan Campbell said at the start of training camp it was unlikely Kerby Joseph would be ready for the start of the regular season.	ConfidenceHigh	StatusSingle-source via Detroit Free Press as of Aug 25, 2026, 7:18 PM UTC
ClaimPlayers who open the season on the PUP list must miss at least the first four games.	ConfidenceHigh	StatusSingle-source via Detroit Free Press as of Aug 25, 2026, 7:18 PM UTC
ClaimDan Campbell said Kerby Joseph is not currently with the team but 'He will be, though.'	ConfidenceHigh	StatusSingle-source via Detroit Free Press as of Aug 25, 2026, 7:18 PM UTC
ClaimSafety Thomas Harper is dealing with an ankle injury that could keep him out of the preseason finale against the Indianapolis Colts.	ConfidenceHigh	StatusSingle-source via Detroit Free Press as of Aug 25, 2026, 7:18 PM UTC
ClaimThe Lions signed Damone Clark to be a backup linebacker and special teams player.	ConfidenceHigh	StatusSingle-source via Detroit Free Press as of Aug 25, 2026, 7:18 PM UTC

Transparency & Audit Trail

2 outlets · 3 articles consulted: Detroit Free Press, Heavy. 24 claims extracted Version 2 Written 2026-08-25