Horrifying scene during the Chargers vs. Chiefs game Thursday ... L.A. tight end Donald Parham was rushed to the hospital after he violently slammed his head on the turf during a play.
Parham was attempting to catch a touchdown pass in the first quarter of the game at SoFi Stadium ... when his head forcefully hit the ground after he dove for the ball.
The 24-year-old appeared to be knocked unconscious immediately ... with his arms stiffening in the bent position.
Trainers rushed out to the football player .