Undrafted free agents are the heart and soul of an NFL roster. They're the underdogs who overcame. They didn't get to hear their names during draft weekend called yet make sure everyone knows their names eventually.

Even after infusing their locker rooms with a bit of youth last weekend, teams will continue to craft their depth charts through free agency in the coming weeks. In fact, we just saw an instance of that from the Carolina Panthers —who agreed to terms with former Las Vegas Raiders wide receiver Hunter Renfrow this past Sunday.