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Combine Workouts Day 4: DB
A look at the final day of workouts at the NFL Combine featuring defensive backs.

Miami defensive back Rayshawn Jenkins. (AP Photo/David J. Phillip)

LSU defensive back Jamal Adams runs the 40-yard dash. (AP Photo/Perry Knotts)

Utah defensive back Brian Allen. (AP Photo/David J. Phillip)

North Carolina State defensive back Josh Jones. (AP Photo/David J. Phillip)

Connecticut safety Obi Melifonwu. (AP Photo/Gregory Payan)

Connecticut defensive back Obi Melifonwu records a 44.0 inch vertical jump. (AP Photo/David J. Phillip)

LSU defensive back Jamal Adams. (AP Photo/David J. Phillip)

St. Francis defensive back Lorenzo Jerome. (AP Photo/David J. Phillip)

USC defensive back Adoree' Jackson. (AP Photo/David J. Phillip)

San Diego State defensive back Damontae Kazee. (AP Photo/David J. Phillip)

Boston Colllege defensive back John Johnson. (AP Photo/David J. Phillip)

Alabama defensive back Marlon Humphrey. (AP Photo/David J. Phillip)