Here is the official list of undrafted free agents the Tennessee Titans have signed per the official site:

WR Devin Aguilar (Washington)
TE Brandon Barden (Vanderbilt)
T George Bias (Stephen F. Austin)
TE/LS Beau Brinkley (Missouri)
G Chandler Burden (Kentucky)
WR Chase Deadder (Sacramento State)
DT DaJohn Harris (Southern California)
WR LaQuinton Evans (Southern University)
S Christian Scott (Texas)
QB Nick Stephens (Tarleton State)
C William Vlachos (Alabama)
LB Alex Watkins (Alabama)
RB Darryl Whiting (Fordham)
CB Gary Wilburn (Connecticut)
WR Derrick Woods (Cincinnati)

You will find this hard to believe, but I really like Vlachos. He was the anchor of a very good offensive line at Alabama. Josh Norris told me on Twitter that he doesn't have an NFL career because he has short arms (cue the Karl Klug arms photo).

Jim Wyatt says that the highlight of that group is Harris from USC. It is a rare occurrence that an undrafted free agent ends up making the final cut for the Titans, so Harris is as good of a guess as any.