2015 NFL Draft: 1st-Round Order and Prospects with Biggest Stock Changes

The past 48 hours or so speak volumes as to how things surrounding the first round of the NFL draft can change in epic fashion.

For those who tuned out for just a few days to instead focus on March Madness, the entirety of the top 10 is now in question after NFL.com's Kimberly Jones broke a bit of bad news about Nebraska defensive end Randy Gregory.

There also happens to be plenty of positive news rocketing prospects up boards at this time of year thanks to pro days. As one can see below, sometimes one eye-opening 40-yard dash does all the heavy lifting.

Let's take a look at some of the biggest notable stock changes continuing to make the rounds after a peek at the first-round order.

2015 NFL 1st-Round Order and Predictions

Pick	Team	Selection
1	Tampa Bay Buccaneers	Jameis Winston, QB, Florida State
2	Tennessee Titans	Marcus Mariota, QB, Oregon
3	Jacksonville Jaguars	Alvin Dupree, DE/OLB, Kentucky
4	Oakland Raiders	Leonard Williams, DL, USC
5	Washington Redskins	Vic Beasley, OLB, Clemson
6	New York Jets	Kevin White, WR, West Virginia
7	Chicago Bears	Dante Fowler Jr., DE, Florida
8	Atlanta Falcons	Shane Ray, DE/OLB, Missouri
9	New York Giants	La'el Collins, OL, LSU
10	St. Louis Rams	Marcus Peters, CB, Washington
11	Minnesota Vikings	Amari Cooper, WR, Alabama
12	Cleveland Browns	DeVante Parker, WR, Louisville
13	New Orleans Saints	Randy Gregory, DE, Nebraska
14	Miami Dolphins	Danny Shelton, DT, Washington
15	San Francisco 49ers	Trae Waynes, CB, Michigan State
16	Houston Texans	Dorial Green-Beckham, WR, Oklahoma
17	San Diego Chargers	A.J. Cann, OG, South Carolina
18	Kansas City Chiefs	Brandon Scherff, OT, Iowa
19	Cleveland Browns (via Buffalo)	Arik Armstead, DE/OLB, Oregon
20	Philadelphia Eagles	Landon Collins, SS, Alabama
21	Cincinnati Bengals	Malcom Brown, DT, Texas
22	Pittsburgh Steelers	Owamagbe Odighizuwa, OLB, UCLA
23	Detroit Lions	Eddie Goldman, DT, Florida State
24	Arizona Cardinals	Eli Harold, OLB, Virginia
25	Carolina Panthers	Andrus Peat, OT, Stanford
26	Baltimore Ravens	Jaelen Strong, WR, Arizona State
27	Dallas Cowboys	Jalen Collins, CB, LSU
28	Denver Broncos	Maxx Williams, TE, Minnesota
29	Indianapolis Colts	Breshad Perriman, WR, UCF
30	Green Bay Packers	Kevin Johnson, CB, Wake Forest
31	New Orleans Saints (via Seattle)	Devin Funchess, WR/TE, Michigan
32	New England Patriots	Todd Gurley, RB, Georgia

Prospects with Biggest Stock Changes

Marcus Peters, CB, Washington 

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It seems like a decade ago now, but at one point, Marcus Peters was the biggest question mark in the class. 

Call it quite the feat considering the weak state of the cornerback position this year. Peters remains by far the most talented player at the position in his class, but getting dismissed from Washington last season sort of threw things for a loop.

Peters continues to work his way back into good graces, though. At the NFL Scouting Combine, Reuben Frank of CSNPhilly.com captured his thoughts surrounding off-field drama:

"

They want to know the character. Am I a hothead? Which is false. I made some immature decisions and I live from them and I learn from them and I grow as a man.

...

I live and I learn from it, you know? There are going to be things that aren't going to go right, but I went through one of the worst things that could happen to me in life.

I got kicked off my team, I wasn't able to finish out my college career with my teammates and I own up to that and I man up to that and I just move forward.

"

On the field, Peters came in at 6'0" and 197 pounds at the combine with solid numbers in most athleticism drills.

Off it, he continues to receive praise, as Bleacher Report's Matt Miller helps to illustrate:

In a nutshell, Peters' path to the draft is how prospects with off-field concerns need to proceed to turn things back in their favor. Of course, top-10 on-field talent helps.

From fringe first-round pick with a flurry of question marks surrounding him to surefire lock, Peters is here to stay.

Kevin Johnson, CB, Wake Forest

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Let's just stick with cornerback, perhaps the most confusing position in the class.

Kevin Johnson is far from a household name, but thanks to a strong path to the draft, he now finds himself right with or above fellow corners such as Trae Waynes, P.J. Williams, Jalen Collins and more in the first-round discussion.

Now is a good time to get to know Johnson, who hit the combine at 6'0" and 188 pounds while ranking among the best at his position in the vertical jump (41.5 inches), broad jump (130 inches), three-cone drill (6.79 seconds) and 20-yard shuttle (3.89 seconds).

Long story short, Johnson is a freak athlete with ideal size who flashes well on film. Folks are now aware they need to go back and look at Wake Forest's tape.

There's a reason ESPN's Mel Kiper mocked Johnson at No. 27 to the Dallas Cowboys in his latest offering:

"

Dallas could go a few ways here, because the Cowboys have a need along the defensive line, and safety is also a question mark, but I'm not sure they need anything more than a cornerback who can play right away, and Johnson fits the profile. A standout on a lousy team, Johnson has good length for the position and moves and mirrors as well as any cornerback in the draft. He can make man-to-man coverage look so easy at times, and he's an active run defender. It's hard to play while ahead in the NFL if you can't cover, and Dallas would do well with this pick.

"

With Johnson now on the minds of the globe close to one month before the big day, it'll be hard for him to slip back out of first-round chatter.

Johnson is the latest example of what the scouting combine and pro days can do for talents who hail from smaller schools or programs struggling to post tallies in the win department.

Breshad Perriman, WR, Central Florida

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Now about the fast 40-yard dash. 

Maybe fast isn't the right word. Somebody else can pick it out after digesting the initial report of Perriman's efforts at his pro day, provided by agent Drew Rosenhaus:

Now, it's important to keep things in perspective. Pro day times are always faster. Chalk it up to friendly turf and a comfortable environment for the prospect. It also helps that hand times are quicker than electronic ones.

This is the exact thing Perriman needed to elevate his stock to first-round status. Due to injury, he didn't participate at the combine beyond measuring in at 6'2" and 212 pounds.

What the NFL needed to see at his pro day, exaggerated or not, is if his speed truly is defense-stretching. After all, he didn't catch a ton of passes at UCF, but go ahead and peek at the video-game-esque per-catch averages from his past two seasons:

YEAR	REC	YDS	AVG	TD
2014	50	1044	20.9	9
2013	39	811	20.8	4

Perriman still has plenty of work to do. He has a reputation for dropping catchable passes, as highlighted by Pro Football Focus' Steve Palazzolo, and his route running could use some polish.

Still, it's not easy to stand out in a wide receiver class perhaps deeper than last year's historic offering. Perriman did so in just a single dash.

Stats courtesy of NFL.com and accurate as of March 27. All advanced metrics via Pro Football Focus.