DBU is up for debate, I think. Miami's been great at safety, but hasn't had many top flight NFL corners.
Texas, OSU* are up there for DBU, LSU recently. I'd like to see a breakdown of that.
A lot of these really depends on the time span that you specify. Personally I think its hard to claim any position without players that are currently active in the league at the position. If you have no active studs at the position then all your success are too far back to remember much like Tenn's WRs. We need some new blood to not just get to the league but ball out... most of our studs are from the early 2000 teams are either retired or on the decline. Currently we have a few good players but outside of TE we don't dominate any position..
TE:
TE Greg Olsen (Panthers)
TE Jimmy Graham (Seshawks)
TE Clive Walford (3rd Round, Pick
#68 )
TE Richard Gordon (Chiefs)
TE Erik Swoope (Colts PS)
TE Chase Ford (Vikings cut)
TE Asante Cleveland (Patriots cut)
WR:
WR Allen Hurns (FA Jaguars)
WR Andre Johnson (Texans)
WR Leonard Hankerson (Redskins)
WR Devin Hester (Falcons)
WR Travis Benajmin (Browns)
WR Phillip Dorsett (1st Round, Pick
#29 , Colts)
WR LaRon Byrd (Dolphins PS)
RB:
RB Lamar Miller (Dolphins)
RB Frank Gore (49ers)
RB Duke Johnson (3rd Round, Pick 77)
RB Mike James (Bucs Cut)
OL:
OT Ereck Flowers (1st Round, Pick
#9 )
OT Seantrell Henderson (Bills)
OL Orlando Franklin (Chargers)
OL Brandon Linder (Jaguars)
OT Eric Winston (Bengals)
OL Jonathan Feliciano (4th Round
#238 Raiders)
OL Jason Fox (Dolphins)
OG Brandon Washington (Rams)
OG Harland Gunn (Colts)
QB:
QB Stephen Morris (Jaguars PS)
_____________________________________________________________
DL:
DT Vince Wilfork (Patriots)
DE Calais Campbell (Cardinals)
DE Olivier Vernon (Dolphins)
DE Allen Bailey (Chiefs)
LB:
LB Jon Beason (Giants)
LB Denzel Perryman (2nd round, Pick
#48 )
LB Sean Spence (Steelers)
LB Ray Ray Armstrong (Raiders)
LB Anthony Chickillo (6th Round
#212 , Steelers)
LB Thurston Armbrister (FA Jaguars)
LB Darryl Sharpton (Bears)
CB:
CB Sam Shields (Packers)
DB Ladarius Gunter (FA Packers)
CB Brandon McGee (Rams)
CB Brandon Harris (Titans) IR
S:
S Antrel Rolle (Giants)
S Brandon Meriweather (Giants)
P:
P Matt Bosher (Falcons)
P Pat O'Donnell (Bears)