The truth is you can’t blame yourself either since nobody wants an injury to happen unless you are playing with a player who is out there to hurt people. If you encounter someone like that then throw him out of the game and don’t play with him ever again. A player like that can’t be tolerated by even his teammates as it would be bad for his reputation. What kind of player would do that anyway? It would end not being good for anybody’s health as nobody would want to play with that guy anymore which means he may have to switch addresses in order to play the sport he loves again. Nobody would want that so better play the game you love not by hurting anyone but by playing fair.