An old-school Cover 2 cornerback, Johnson has NFL size and strength. He does a nice job of utilizing it as a press defender who can hinder the release for lesser athletes. His lack of top-end speed and back-to-the-ball talent could take him out of man consideration, but he might have the traits to play a corner spot where he can have his eyes on the ball.
Press-man cornerback with excellent speed and short-area quickness, but a lack of desired ball skills and instincts. At this point, Blackwell is a better athlete than cover corner and he lacks desired size for the perimeter. He will need to level up the technique and get tougher against the run before he is ready to play slot corner in the NFL. Speed and explosiveness will be intriguing, but his tape just isn't there yet.
