Cowboys place offensive lineman Matt Hennessy on season-ending injured reserve

The Dallas Cowboys have placed offensive lineman Matt Hennessy on season-ending injured reserve, ending his availability for the 2026 season, ESPN NFL reporter Todd Archer reported Thursday morning and Yahoo Sports relayed. The transaction reduces the Cowboys’ depth options along the interior offensive line for the rest of the year.

Hennessy’s move to injured reserve indicates Dallas will not be able to use him in games during the remainder of the season. In practical roster terms, it also forces the team to plan around the remaining starters and backups at guard and center, positions that often require frequent communication, rapid adjustments, and next-man-up reliability due to injuries and performance swings.

For a team, the timing of an injured-reserve placement matters. Even without specific details about the injury in the published report, a season-ending designation typically narrows Dallas’ flexibility in-season, pushing additional reps to other linemen and increasing the importance of cohesion up front during both pass protection and run blocking.

The Cowboys’ offensive line has to stay balanced across run and pass environments, with interior protection frequently determining quarterback comfort and the ability to sustain blocks. When a depth piece is removed for the season, teams commonly respond by shifting roles internally, promoting a backup into a more frequent role, or leaning more heavily on the offensive line depth already on the roster.

There are still limits to what can be stated based on the information available here. The report, as carried by Yahoo Sports, confirms the injured-reserve placement and that it is season-ending, but it does not provide further medical particulars or specify how many games were missed before the move.

What to watch next for Dallas is how the team reshapes its interior line rotation from here. Monitor who begins receiving expanded practice work at Hennessy’s positions and how the Cowboys structure their offensive line personnel week to week, because the loss of an experienced lineman can affect protection schemes and substitution patterns.

For the league picture, injured-reserve transactions like this often have ripple effects across play-calling. A team may be more cautious if lineup changes increase the chance of miscommunication, or it may adjust to protect younger or less frequent combinations. The Cowboys’ immediate priority will be building a stable interior unit capable of sustaining blocking assignments and handling pass-rush pressure without Hennessy’s presence.