QB | RB | WR | TE | OL | DL | LB | DB
2015 NFL Combine Stock Report:
QB | RB | WR | TE | OL | DL | LB | DB
2015 NFL Combine Field Drills Recap:
QB | RB | WR | TE | OL | DL | LB | DB
2015 NFL Combine Bench Recap:
RB | TE | OL | DL | LB | DB
2015 NFL Combine Weigh-In Recap:
QB | RB | WR | TE | OL | DL | LB | DB
NFL Combine Rumors by Tony Pauline
This is the 2015 NFL Combine Stock Report for the defensive backs. Follow me @walterfootball for updates.
Jalen Collins, CB, LSU 
A big corner who runs fast will always generate attention. That’s exactly what the 6-1, 203-pound Jalen Collins did at the NFL Combine when he ran a 4.43 unofficial 40 time. His 10-yard split (1.50) was even better, and his 10-4 broad jump and 36-inch vertical also helped. Collins, who was terrific in the field drills, may have emerged as the No. 2 cornerback in this class behind Trae Waynes.
Justin Cox, CB, Mississippi State Justin Cox was perhaps the defensive back who helped himself the most at the NFL Combine. Cox blazed a 4.36 40 with a 1.53 10-yard split despite being 6-1, 191. He also notched a 38-inch vertical and a 10-9 broad jump. His size and athleticism will have teams intrigued, especially considering that he also was impressive in the field drills.
Ronald Darby, CB, Florida State Ronald Darby also had a strong showing at the NFL Combine. He’s not 6-foot or taller like the previous two cornerbacks, but he was able to run a 4.32 unofficial 40 time with a blazing 1.47 10-yard split. His jumping numbers (10-9 broad, 41.5 vertical) were phenomenal. I liked what I saw out of Darby in the field drills, and if the teams felt the same way, he could be chosen in the back half of the first round.
Quandre Diggs, CB, Texas 
Short and slow is not good in the NFL, especially when it comes to playing the cornerback position. Diggs will have to overcome his 4.56 40 and 1.65 10-yard split along with his small frame (5-9, 196). Already an early third-day prospect, Diggs could slide into late-round territory.
Charles Gaines, CB, Louisville Charles Gaines ran well in the 40 (4.44 official, 4.34 unofficial), but he did his best work in the field drills. He had a strong showing overall and may have cemented himself a spot in the second day of the draft.
Chris Hackett, S, TCU As mentioned in the linebacker stock report, the TCU players inexplicably ran very slowly at the NFL Combine this year. Chris Hackett was no exception, clocking in at 4.81. I know 40 times aren’t the greatest measuring stick for determining future NFL success, but a 4.8 40 for a safety is absolutely atrocious.
Byron Jones, CB, Connecticut All Byron Jones did at the NFL Combine was break the world record for distance in the broad jump. No biggie. Jones’ 12-foot-3 leap nearly crashed Twitter, and many were eager to see if he could shatter Chris Johnson’s 40-time record. Alas, Jones didn’t run because he wasn’t fully healthy, which makes me wonder if he could’ve gone farther than 12-3 if he happened to be 100 percent. Jones’ stock will soar, but before you roll your eyes and declare him just a workout warrior, be aware that he actually has plenty of strong tape. It wouldn’t surprise me at all if Jones found his way into the first round. I currently have him in the second frame in my 2015 NFL Mock Draft.
Damarious Randall, S, Arizona State Landon Collins is the top safety in this class, but there is no clear-cut No. 2 prospect at the position. It’s a very weak group, but Damarious Randall could emerge as the second safety to be taken off the board. Randall’s 4.46 40 (and 1.56 split) was terrific for a safety. He also did a good job in the drills.
Eric Rowe, S, Utah There was some discussion that Eric Rowe might have to move to safety, but his showing at the NFL Combine might have ended that talk. Rowe was athletic and fluid in the drills, and he also managed a 4.45 40 with a 1.56 10-yard split. He may ultimately play safety, but either way, Rowe could be chosen on Day 2 in the wake of his performance in Indianapolis.
Trae Waynes, CB, Michigan State Trae Waynes was already considered the top cornerback in the 2015 NFL Draft class, but he still managed to improve his stock in Indianapolis. Waynes looked outstanding in both the measureables and drills. He clocked in with the fastest 40 times for all of the cornerbacks, running a 4.31 with a 1.53 10-yard split. He also notched a 38-inch vertical and a 10-2 broad jump. Waynes could go as high as No. 6 to the Jets.
Kevin White, CB, TCU I mentioned that being short and slow wasn’t a good combination in Quandre Diggs’ entry. Well, Kevin White is just as short and much slower; he ran a 4.63 40 time, which was abysmal considering his 5-9, 183-pound frame. I don’t know what’s going on at TCU, but someone at that school needs to start preparing these prospects for the NFL Combine.
Back to the 2015 NFL Draft Scouting Combine Page.
2015 NFL Combine Results - Weigh-Ins and 40 Times:
QB | RB | WR | TE | OL | DL | LB | DB
2015 NFL Combine Stock Report:
QB | RB | WR | TE | OL | DL | LB | DB
2015 NFL Combine Field Drills Recap:
QB | RB | WR | TE | OL | DL | LB | DB
2015 NFL Combine Bench Recap:
RB | TE | OL | DL | LB | DB
2015 NFL Combine Weigh-In Recap:
QB | RB | WR | TE | OL | DL | LB | DB
NFL Combine Rumors by Tony Pauline
NFL Picks - Nov. 20
2025 NFL Mock Draft - Nov. 20
NFL Power Rankings - Nov. 19
Fantasy Football Rankings - Sept. 4
