what I read and see form Johnson, he looks great for a 3-4 man cover CB.
Analysis
Man Coverage: Backpedal is low and quick, allowing him to adjust to any routes when bailing off the line. Possesses speed to recover from picks or good route sells. Locks up larger receivers off the line in press, has speed to stay with them down the sideline. Tends to be overly physical at times, drawing penalty flags. Owns good vertical and plays tough in jump ball situations, but veteran NFL receivers will be more likely to take advantage of height and strength discrepancies.
Zone Coverage: Heady zone defender. Sticks with crossing receivers if needed, while also reading deep routes to prevent throws over the top. Plays boundary and field sides equally well.
Ball Skills: Better at knocking the ball away than making the tough interception. Fair hands to make the play when closing on throws in front of him. Usually finds the ball when looking back in man, but it is often enough able to make the quick catch.
Run Support: Tough enough to handle run support responsibilities on the outside. Plays with leverage and sheds against most receiver blocks, though NFL receivers will use their size more effectively against him.
Tackling: Thick, compact corner with strength to bring down larger receivers by wrapping or cutting out their legs. Generally dependable zone tackler who gives up few yards after the catch to his receiver. Comes across the field, takes deep angles to help teammates prevent big plays. Tries to make the big hit and shoulder ballcarriers to the ground at times, however, and will miss cut tackles on occasion.
Intangibles: Plays with strong attitude and a short memory. Vocal leader on the field, directs traffic. Has grown since ejection against UNLV his freshman year. No known character concerns.