in other football manager games there is a distinction between injuries (light-heavy). in top 11 there is not (how do you know if the player can continue or not)? in reality when a professional player is injured when there are no substitutions left he usualy walks away. only if the game is very crusial he can stay in risking a greater damage. in the past when the game was not so much based on money there were many cases injured players to stay in the field to help their beloved team. but this heroic situations belong to the past. a minor injurie that can keep a player out for a few days can deteriorate easily and end someone's career if keep playing.