Dolphins put RB De'Von Achane on injured reserve after knee injury vs Chiefs

Miami Dolphins running back De'Von Achane left the field in the fourth quarter of Sunday’s game against the Kansas City Chiefs with a knee injury and was later ruled out for the rest of the season, ESPN reported. The 22‑year‑old, who had been a key part of the Dolphins’ high‑tempo offense, was taken to the locker room after a collision while attempting a cutback. Team doctors confirmed a significant knee issue and placed him on injured reserve on Monday.

Achane, a third‑round pick from Texas A&M, entered the 2024 season as a change‑of‑pace weapon, known for his speed and ability to line‑up both in the backfield and as a receiver. He logged 450 rushing yards and 180 receiving yards in the first six games, contributing to Miami’s 4‑2 start. His versatility had helped the Dolphins diversify their attack, especially in two‑minute drills where his quickness created mismatches against slower linebackers.

The injury comes at a critical juncture for Miami, which is battling for a playoff berth in a tightly contested AFC East. Losing Achane reduces the depth chart behind primary back Raheem Mostert and limits the team’s ability to employ spread formations that rely on a dual‑threat back. Head coach Mike McDaniel will likely lean more heavily on the veteran backfield and may seek a short‑term free‑agent signing to bolster the run game before the trade deadline.

Knee injuries among NFL running backs often carry a long recovery timeline, especially when ligament damage is involved. Historically, players with similar setbacks have missed anywhere from eight to twelve weeks, with some requiring surgery that can extend the absence into the following season. The Dolphins’ medical staff will conduct further imaging to determine the exact nature of the injury and outline a rehabilitation plan.

For the broader league, Achane’s situation underscores the physical toll of a high‑tempo offensive scheme that emphasizes rapid cuts and frequent contact. Teams that rely on speed backs must balance the upside of explosive plays against the heightened risk of lower‑body injuries, a factor that front offices consider when drafting and structuring contracts.

Miami will announce its next roster move later this week, but the loss of Achane is already reshaping the Dolphins’ offensive play‑calling and could have ripple effects on the AFC playoff picture.