Did you have an important player injured at a pivotal point in the season? Don't worry! There's plenty of things you can do to make up for the loss of production and keep your team in the playoff hunt!
One thing you could do is trade the player to another team. Of course, that player loses some value being injured, but depending on how good they are, you still may be able to get a good deal. If the player is set to come back very late in the year, it may be hard to decide to trade them or not. The question you must answer is can you win games without them till they come back? If so, you may want to hold onto them to make a strong playoff run in the future.
If you can't win games without them, how important is the championship to you this season?
If your league is that of the dynasty variety, and the player won't be back till next season, consider holding onto them for a strong return next season. If they are often injured, trading them for solid depth isn't a bad option.
If the player is available to drop, consider using the waiver wire to replace them. You most likely won't get as many points from the replacement, but points are points when trying to win games. However, if the player is unavailable to drop, you're stuck with trying to trade them off to someone else.
Before going through this process however, note the state of the injury. Are they on the Injured Reserve (IR), meaning they're out for the season? Are they coming back in three weeks? When is the transaction deadline? These are all important things to know.
This is the least enticing option when you have an injured player but can sometimes be the wisest choice to make it. You stick with the player you have, although he may not be able to perform for a few weeks. If it's week 2 of the regular season, and he's only projected to be out for 3-4 weeks, it makes the most sense to hold on to the injured player. Some fantasy football leagues give teams the option to place injured players on an IR, which allows the team with the injured player to keep that player and free up a roster spot to add someone healthy/productive.
In the event that the player cannot be placed on the IR, but the injury is still shorter term, you can simply keep the player on your bench. While this strategy may hurt the team a little because you are keeping a player that cannot provide value for the weeks that he is injured, you get to keep him for when he returns from injury, and are able to plug him right back into the lineup without issue.