Lamar Jackson is not playing due to a hamstring injury he sustained during the Baltimore Ravens' Week 4 game against the Kansas City Chiefs on September 28, 2025. He had to leave the game late in the third quarter and was officially listed as questionable to return. The team is being cautious with his recovery because hamstring injuries can take 2 to 6 weeks to heal depending on their severity and the player's rehabilitation. Jackson's return timeline depends on MRI results and how he progresses in practice, but currently, the Ravens are prioritizing his health to avoid aggravating the injury further. He did not return in the game after the injury and the Ravens replaced him with backup quarterback Cooper Rush.