What happened: The injury occurred early in the second quarter of Sunday's matchup. Los Angeles officially listed the tight end as questionable to return.
Why it matters: The Chargers added Njoku to their roster during the offseason. His absence removes a receiving option from the offense.
By the numbers: The score is currently tied 7-7 between the Las Vegas Raiders and Los Angeles Chargers.
What to watch: Medical staff will evaluate the knee to determine his status moving forward.