Walter has him as CB #19

Rasul Douglas, CB, West Virginia
Height: 6-2. Weight: 204. Arm: 32.13. Hand: 9.25.
40 Time: 4.59.
Projected Round (2017): 3-5.
4/26/17: Douglas is a junior college product who didn't play much as a junior. However, he made the most of his senior year as he tied as the nation's leader with eight interceptions. He also recorded 70 tackles and eight passes broken up.

Sources say that Douglas has good size to him for the NFL, and they see him being a big press-man corner with ball skills. He also has early round potential, but sources say that since Douglas is a 1-year wonder, there is some risk to him. Douglas had some highlights and lowlights at the Senior Bowl. He is a very scheme-specific kind of player, and that could cause him to slide in the 2017 NFL Draft.
http://walterfootball.com/draft2017CB.php

STRENGTHS: Tall, workable body type with above average arm length. Long-striding athlete. Looks to jam and disrupt route tempo. Great understanding of timing and spacing from off-coverage to drive on underneath throws and converge at the catch point - needs to better anticipate, but reacts in a flash. Understands down, distance and situations, which improves his guess rate when jumping routes. Fierce ballskills and competes with a "my ball" attitude to win 50-50 balls and steal catches away from receivers. Always looking for the big play after the interception, averaging 12.6 yards per return in 2016 with one score (8/101/1). Mentally and physically tough and competes with a survivor mentality.

WEAKNESSES: Lean lower body. Upright in his pedal and transition with high hips and leggy movements. Aggressive in press, but needs to improve his timing and balance to land his jabs. Struggles to sink and control his momentum on the move, losing cornerbacks on non-vertical routes. Too easily gives up inside position and late to gain proper body position. Struggles to find the ball with his back to the quarterback. Latches on to receivers and doesn't loosen his grip downfield, leading to attention from the zebras. Long-striding speed, but lacks the make-up acceleration to catch receivers from behind. Play strength doesn't always match his intentions as a run defender. Only one season of starting experience at the FBS-level.
http://csnphilly.stats.com/nfldraft/players.asp?id=262816


Maybe they see him replacing one of the smaller CBs in the Red Zone.