Rule 5.5.k. A player who exhibits signs, symptoms, or behaviors consistent with a concussion (see Appendix H in therules book) must be immediately removed and receive appropriate medical evaluation. The player may not return untilcleared by the appropriate medical personnel.Rule 5.5.k.1. While the evaluation is taking place, the injured player, whether a starter or a substitute, may be replaced byany eligible player who has not yet participated in the game.Rule 5.5.k.2. If the injured player is cleared to resume participation, the player may re-enter in their original lineup spotonly. A player may only reenter the game one time. The temporary replacement player may again participate in the gameas a substitute in the same lineup spot only.
