NOTES: Charles was hurt when he was hit in the side of the head by Donald Butler. He said he would have gone back in, "but they told me to just relax." Charles said he was tested for a concussion but was cleared. ... San Diego's Ryan Mathews appeared to sprain his left ankle early in the second quarter and was in and out of the game after that. ... Chiefs LG Jeff Allen left with what described as a head injury and defensive end Glenn Dorsey left with a calf injury.