Los Angeles Rams' star receiver Cooper Kupp faces an uncertain return due to a hamstring issue. Discover how this impacts the team's lineup and strategies. 

Cooper Kupp Out Against Seahawks: Los Angeles Rams' wide receiver Cooper Kupp will not play in the upcoming game against the Seattle Seahawks. 

Injured Reserve a Possibility: The Rams are considering placing Kupp on the injured reserve list, which would require him to miss at least four games. 

Unclear Timetable for Return: Coach Sean McVay states that Kupp's return could range from a few weeks to an injured reserve designation. 

Hamstring Issue Since Training Camp: Kupp has been dealing with a hamstring issue since the beginning of training camp. 

Consultation with Specialist: Kupp sought advice from a specialist in Minnesota to gain clarity on his hamstring issue, which deviates from standard strains. 

No Separate Strains: McVay confirms that Kupp's current issue is a continuation of the initial injury and not separate strains or pulls. 

Soft-Tissue or Nerve Issue?: The Rams, along with the specialist, are trying to determine if Kupp's issue is a soft-tissue injury or potentially related to a nerve issue. 

Gray Areas in Diagnosis: McVay admits there's a lot of uncertainty surrounding Kupp's condition, as it doesn't follow standard protocols for soft-tissue injuries. 

Temporary Lineup Changes: In Kupp's absence, Van Jefferson takes the No. 1 receiver role, with Tutu Atwell and Puka Nacua as Nos. 2 and 3. 

Temporary Lineup Changes: In Kupp's absence, Van Jefferson takes the No. 1 receiver role, with Tutu Atwell and Puka Nacua as Nos. 2 and 3. 

Temporary Lineup Changes: In Kupp's absence, Van Jefferson takes the No. 1 receiver role, with Tutu Atwell and Puka Nacua as Nos. 2 and 3. 

Veteran Additions: The Rams signed veteran receiver Demarcus Robinson to a one-year deal this offseason. 

Tight End Situation: The Rams have four tight ends, led by Tyler Higbee, but may only have three available due to Hunter Long's hamstring issue. 

McVay's Confidence in Team: Despite Kupp's absence, McVay expresses confidence in the team's ability to adapt and develop rapport with quarterback Matthew Stafford. 

Kupp's Significant Role: Kupp's specific role as the "F" receiver and his option routes dramatically alter the Rams' pass game and run blocking system. 

Prior Injuries: Kupp had over one-third of the Rams' target share in 2022 before a season-ending ankle injury, which was surgically repaired.