Not uncommon for an opposing team to take their metal cleats and cleat the hand of a baserunner diving back to a base ... ripping the glove and drawing blood ... intent being to inflict enough pain to have the baserunner lift her hand and be tagged out.
Had this exact thing happen to a player at a recent tournament. Our 23u team registered for an open age tournament. Our player dove back to first and was cleated by the first baseman. She had the presence of mind to keep her hand on the base until time was called. Initially I thought it was an accident. But later the first baseman came over to apologize to our player. She stated that she has been out of college for several years, but was trained in college to do that exact thing. She didn't mean to do it in this case, but it has become a habit for her. Our player had a scratch and some bruising, but luckily nothing more serious.