The Ravens have bolstered their offensive line, bringing back guard John Simpson.

Here's who the Ravens could consider adding at center and guard in free agency.

Here's who the Ravens could add to bolster their pass rush.

Here's who the Ravens could consider adding at wide receiver in free agency.

Here's who the Ravens could add in free agency to bolster their tight end room.

Here's who the Ravens could add as a depth piece to their secondary.

The Ravens have added defensive end Trey Hendrickson to their defense.

See the evolution of defensive end Trey Hendrickson, who the Ravens signed Thursday.

The Ravens have added to their secondary, signing former New England Patriots safety Jaylinn Hawkins.

Here's who the Ravens could add for more depth at cornerback.

See what deals Spotrac projects for the Ravens' unrestricted free agents.