The way I get through it is see how important the player is, then check the length of time the player will be out!, if the injured player is one of my second string then I put him in the reserves, if he is a important player(1st team) and the out time is 3/6 days then I check to see who in the league Im playing in the next few days, if Im playing teams that are right up the league with me I red pack him back to health A,S,A,P!, if there mid to low table then I leave him in the reserves a few days to reduce the amount of healing packs he requires and play my second string cover player temporary.