The Ravens have historically done an exceptional job finding and using undrafted free agent to bolster their teams. Priest Holmes, Mike Flynn, Ma'ake Kemoeatu, Bart Scott, Dannell Ellerbe, Justin Tucker, the list of undrafted gems that have become important contributors for the Ravens goes on and on.
On average, at least one undrafted rookie makes the Ravens final roster, although that feat may be more difficult this season since the Ravens drafted eleven players in the 2016 draft. They have room for about seven UDFAs with roughly 83 other players currently under team control before post-draft releases and veteran free agent signings.