I'm very sketchy of cornerbacks right now in round 1-2
Recent history has shown the "consensus" grading on them to be not very accurate.
First list is all the players graded by Draft Scout.com as 2nd round or higher CB prospect. Second line is how they were actually drafted (all drafted 2nd round or higher)
2008: McKelvin, Mike Jenkins, Rodgers-Cromartie, Cason, Talib, Flowers, Justin King, Reggie Smith
2008: McKelvin (8), Rodgers-Cromartie (16), Talib (20), Jenkins (25), Cason (27), Flowers (35), Tracy Porter (40), T. Wheatley (63), T. Thomas (64)
2009: Malcolm Jenkins, Darius Butler, Vontae Davis, Alphonso Smith, Sean Smith, D.J. Moore, Kevin Barnes
2009: Jenkins (14), Davis (25), A. Smith (37), Butler (41), Jarius Byrd (42), Sherrod Martin (59), Sean Smith (61)
2010: Joe Haden, Kyle Wilson, Devin McCourty, Kareem Jackson, Patrick Robinson, Chris Cook, Brandon Ghee, Jerome Murphy, Dominique Franks
2010: Haden (7), K. Jackson (20), McCourty (27), K. Wilson (29), P. Robinson (32), Cook (34), J. Arenas (50)
2011: Patrick Peterson, Prince Amukamara, Jimmy Smith, Aaron Williams, Brandon Harris, Ras-I Dowling, Devon House
2011: Peterson (5), Amukamara (19), Smith (27), Dowling (33), Williams, (34), Marcus Gilchrist (50), Harris (60)
2012: Morris Claiborne, Stephon Gilmore, Dre Kirkpatrick, Janoris Jenkins, Josh Robinson, Brandon Boykin, Jamell Fleming, Trumaine Johnson
2012: Claiborne (6), Gilmore (10), Kirkpatrick (17), Jenkins (39), Casey Heyward (62)
2013: Dee Miliner, Xavier Rhodes, Desmund Trufant, D.J. Hayden, Jamar Taylor, Jonathan Banks, Dwayne Gratz
2013: Miliner (9), Hayden (12), Trufant (22), Rhodes (25), Darius Slay (36), Banks (43), David Amerson (51), Taylor (54), Robert Alford (60)
2014: Darquez Dennard, Justin Gilbert, Kyle Fuller, Jason Verrett, Bradley Roby, Lamarcus Joyner, Phillip Gaines
2014: Gilbert (8), Fuller (14), Dennard (24), Verrett (25), Roby (31), Joyner (41), Stanley Jean-Baptiste (58)
So my analysis of the above is that drafting CB early is a tricky and risky business. This position now is designed to fail and it seems the criteria that succeeds are all over the place and difficult to quantify and scout.
I just want people to understand when Draft Scout now lists the CB prospects for this year as:
2015: Trae Waynes, Kevin Johnson, Marcus Peters, P.J. Williams, Quinten Rollins, Jalen Collins, Byron Jones
It is quite likely that at least HALF of that group will underachieve.