Which free agents will soar into September?

The Cardinals completed the 2008 draft by adding 13 undrafted free agents. While some may be long-shots to make the active roster, a handful of players could become core special-teams players or provide additional depth. Brad Wilbricht analyzes which rookies could make an immediate impact in this AZRedReport.com exclusive.

Click here for the complete list of undrafted free agents signed by the Cardinals.

At first glance, Ali Highsmith seems to be the headliner of the undrafted free agents. Highsmith was a three-year starter and an All-SEC performer at LSU. Although he lacks ideal size (6'0", 226 pounds), Highsmith is an extreme competitor with adequate upper-body strength. He's relentless in pursuit and can make plays in pass coverage.

In addition, Highsmith exhibits tremendous awareness. If he earns a roster spot, he would provide depth at the linebacker position and could excel in kick coverage.

While it was widely expected the Cardinals would select two cornerbacks in the draft, the team came away with only one, first-round pick Dominique Rodgers-Cromartie. With depth still a major concern, CB Marcus Brown from McNeese State will be given every opportunity to earn a roster spot.

Brown boasts excellent size (6'1", 202 pounds) and runs a sub-4.5 40-yard dash. He's a raw prospect,but could be rushed into action if one of the Cardinals top three cornerbacks goes down with an injury.

Safety Dennis Keyes is another undrafted free agent with an excellent chance of contributing in 2008. Keyes is a consistent player with a high football IQ. He demonstrates the ability to read plays as they develop and shows good range while the ball is in flight.

Keyes features adequate ball skills and flashes big-play ability in zone coverage. Additionally, he is excellent in kick coverage and could develop into a valuable special-teams player.

The Cardinals will also look to plug holes along the offensive line. Peter Clifford (Michigan State) and Thaddeus Coleman (Mississippi Valley St) could contend for backup roles behind RT Levi Brown and LT Mike Gandy.

Guards Carlton Medder (Florida) and Hercules Satele (Hawaii) will need to prove themselves early to be considered for a roster spot.

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