The Jacksonville Jaguars lost a number of starters from the 2015 season, including a few on the defensive side of the ball.
Well, lost is a funny word to use in this context. A number of starting defenders that the Jaguars lost needed to go for the team to get over the hump and start winning games. But any time a player who played a lot of snaps and had a large role on a team leaves, a hole is made. It is a hole on the roster that needed to be filled either way, but a hole is on the roster nonetheless.