So i have a little bit of this info in my draft grade project.

How to read this: 22% of the cornerbacks drafted in the first round are All Pros. 25% are pro bowl caliber, 25% are about average, 19% are role player types, and 8% are busts. So 47% of corners drafted in the first round are at least pro bowl caliber players. I'd say thats a pretty decent %

First Round grades for Cornerbacks from 2000-2017
A: 22%
B: 25%
C: 25%
D: 19%
F: 8%

2nd Round grades
A: 8%
B: 8%
C: 44%
D: 18%
F: 21%

3rd Round grades
A: 1%
B: 2%
C: 21%
D: 32%
F: 44%

4th Round grades
A: 3%
B: 3%
C: 18%
D: 36%
F: 40%