Johnston took a massive hit from Ingle as he was trying to catch a deep pass. The safety put his head down and made contact with the wide receiver's head as he was looking for the ball. The back of Johnston's head hit the ground before he went into the fencing posture.

Chargers WR Quentin Johnston exited Saturday's preseason game on a cart after taking a big hit that left him motionless for several minutes, and head coach Jim Harbaugh said he has a concussion.