Bears: none
Bengals: cb at #3 FS,
Bills: cb at #3 ss
Broncos: hb at #2,3 FB
2 TE on depth chart
Cb at #3 fs
Browns: hb at #2,3 fb
Cb at #3 fs
Bucs hb at #2,3 fb
Starters backing up all over front 7 on defense
Cards 2 Qb's
Cb at #3 for fs and ss
Chargers NONE
Chiefs NONE
Colts NONE
Cowboys Hb at #2 fb
Cb at #3 ss
Dolphins NONE
Eagles starting ss at #3 fs
Falcons hb at #3 fb
49ers NONE
Giants Hb's at 2,3 fb
Starters backing up all over defensive front 7
Cb at Fs
Back up fs and ss are starters
Jags
Hb at 3 fb
4 wr at wr depth
Lb's , ss, fs starters backing up
Cb at #3 ss
Jets NONE
Lions NONE
not sure if there is a rule for minimum backs for non QB positions
Packers Hb at 2 fb
Cb at #2 ss
Panthers NONE
Patriots NONE
Raiders hb at 1,3 fb
Rams ss/ fs starters backing up
Ravens NONE
Redskins NONE
Saints NONE
Seahwaks Hb at 2,3 fb
Starting lb's backing up
Steelers NONE
Texans hb at 2 fb
Titans NONE
Vikings starting lb's/ ss/ fs backing up
Cb at #3 ss
No Comment.