Buffalo Bills running back Taiwan Jones' forehead was bloodied after taking a scary hit to the head after his helmet was knocked off in the third quarter.
Jones recovered a muffed punt by Marcus Murphy in the end zone. He was hit, leading to his helmet coming off. He spun and took a shot from Chargers linebacker Uchenna Nwosu, who was flagged for unnecessary roughness.
The official did not appear to immediately blow the play dead after Jones' helmet came off. The play was ruled a touchback, per the NFL rules on muffed punt recoveries in the end zone by the receiving team.
The front of the white headband that Jones was wearing was red with blood as he got up and walked off the field with the training staff.
Coach Sean McDermott said he did not have an injury update on Jones.
"God, you hate to see that," McDermott said. "Whether it's our team or their team, it's scary."
Chargers coach Anthony Lynn said there "was a lot happening on that play" and he could not explain the officials' decision.
"It was tough on Uchenna. It’s his job to go down and make the play and that’s what he did," Lynn said. "The referees, they are not perfect and sometimes calling these games in real speed is difficult, but that should’ve been blown [dead] when the helmet came off."