4. LB Troy Andersen, 15 missed games
Initially, losing Troy Andersen was a big deal. He is a young, talented linebacker who combined for 19 tackles in the two games that he played.
Fortunately, the Falcons had Nate Landman who was a breakout star. If not for Landman, Andersen's injury would rank higher on this list.
With all that being said, Andersen's rare athleticism was missed. There were a couple of games during the season that could have turned out differently if the Falcons had had more speed at the linebacker position.
Hopefully, we will see a fully healthy Troy Andersen next season.