We had a HS kid slide headfirst last year. Catcher takes the throw and blocks the path with her knee. Runner slid mouth-first into the knee guard. By some miracle, it didn't knock out any teeth, but she bit completely through both lips. Stitches on top and bottom. I told her it was pretty gangster that after she left in the ambulance, they were raking her blood out of the dirt.
Are facemasks not required on helmets where you are?