NFL Combine 2012 Results: Analyzing the Cornerbacks Who Improved Draft Stock

Arguably the most talented and deepest position in the 2012 NFL draft, there were some cornerbacks who had their draft stock rise after last weekend's NFL Combine.

Here's a look at a few who really improved their draft stock and have the potential to keep moving up the board.

Trumaine Johnson, Montana

A 6'2", 205-pound cornerback, Montana's Trumaine Johnson has the size and versatility to also make an impact as a safety.

Johnson ran 4.61 seconds on the 40-yard dash, hit 35.5 inches on the vertical and 10'2" on the broad jump at the combine. He may not have top-of-the-line speed, but considering his size, his speed is impressive. His explosiveness was also noteworthy, but Johnson needs to improve his body control and lateral agility.

He ran 7.2 seconds on the three-cone drill and 11.68 seconds on the 60-yard shuttle, so if anything, his early role in the NFL will be as a soft corner or roll down safety against tight ends and running backs.

Johnson does have excellent anticipation and reaction skills, putting himself in position to make plays on a consistent basis. If Johnson, currently slotted as a second-rounder, shows he can change directions more smoothly, he could move into the late first round.

Casey Hayward, Vanderbilt

Easily one of the most, if not the most overlooked SEC defensive back, Vanderbilt's Casey Hayward put on an impressive showing at the combine.

Not getting much recognition at Vandy must have motivated Hayward, because he was a projected late-rounder until the combine. Hayward proved his worth despite being slightly undersized, and is now expected to be off the board by the early third round.

He ran 4.57 seconds on the 40-yard dash, 3.9 seconds on the 20-yard shuttle and 11.1 seconds on the 60-yard shuttle. His smaller frame helps his speed, but Hayward also displayed great instincts and agility.

Hayward will still be more of a nickel/dime back to start in the NFL, as he needs to increase his top speed and build some muscle. His acceleration is ideal and the intangibles are all there.

If he puts on another impressive show at his pro day, Hayward could become an early to mid second-rounder.

Josh Robinson, Central Florida

UCF's Josh Robinson blazed by with 4.33 seconds on the 40-yard dash and 3.97 seconds on the 20-yard shuttle.

He also measured 38.5 inches on the vertical jump and 11'1" on the broad jump (a combine best). Robinson hit 6.55 seconds on the three-cone drill, which was the best among defensive backs and lest we forget, he has good size at 5'10", 200 pounds.

Obviously a freak athlete that can explode while still changing directions and maintaining smooth agility, Robinson moved up from a late-rounder to an early third-rounder just like Casey Hayward. The fixes, though, are tangible which will only occur through development.

Robinson needs to improve his route-recognition when manned-up and learn to be more physical regardless of the coverage. That will transition into becoming a better run defender and play-maker when fighting for the rock on jump balls.

Robinson, who might have the skills to play safety, will see early playing time in true passing situations while he gets fully acclimated to the speed of pro football.

John Rozum on Twitter.