Jets coach Aaron Glenn on Braelon Allen's injury: "It's a pretty serious knee injury."

The New York Jets have placed running back Braelon Allen on injured reserve due to a serious knee injury, significantly impacting their already struggling offense.

Why it matters: Allen's absence will test the depth of the Jets' backfield and places additional pressure on starting running back Breece Hall.

• With the Jets currently winless at 0-4, they need all available offensive weapons to improve their performance.
• Allen was expected to play a critical role in the team's rushing attack, having rushed for 76 yards on 18 carries this season.

What’s new: The injury occurred during a kickoff return, sidelining Allen for an estimated recovery period of 8 to 12 weeks.

• Coach Aaron Glenn described the injury as "pretty serious," and the best-case scenario for Allen's return could be early December, but he may miss the entire season depending on rehabilitation or surgery decisions.

Yes, but: While Allen's injury is a setback, there are alternatives within the roster that the Jets can leverage.

• Breece Hall, who leads the team with 238 rushing yards from 52 carries, is poised to see an increase in touches.
• Isaiah Davis, who has rushed for 27 yards on 5 carries this season, is set to step up as the No. 2 running back, while Kene Nwangwu's status remains uncertain due to a hamstring issue.

What to watch: The restructuring of the Jets' backfield dynamics will be crucial as they navigate upcoming games without Allen.

• Khalil Herbert, recently signed off the Seattle Seahawks’ practice squad, brings experience, having accumulated 1,905 rushing yards over four seasons.
• Additionally, Avery Williams, a former Atlanta Falcons draft pick, adds depth to the practice squad with his return capabilities.

Between the lines: The Jets now face a pivotal moment in their season where effective utilization of their remaining running backs could either spark a turnaround or further complicate their struggles.

• The team's current offensive strategy, which ranks No. 3 in the NFL for rushing, will be heavily scrutinized as players adjust to the loss of Allen.

The bottom line: As the Jets work to regroup post-Allen injury, their ability to adapt under pressure may define their season trajectory. A strong showing from Hall and the newly positioned backs could keep their playoff hopes alive despite Allen's significant absence.